CWE-306
AllowedMissing Authentication for Critical Function
Abstraction: Base · Status: Draft
The product does not perform any authentication for functionality that requires a provable user identity or consumes a significant amount of resources.
4625 vulnerabilities reference this CWE, most recent first.
GHSA-6XC2-CHQH-RQM7
Vulnerability from github – Published: 2026-07-22 00:31 – Updated: 2026-07-22 00:31Vulnerability in the Service Delivery Platform product of Oracle Fusion Middleware (component: Messaging Enabler). Supported versions that are affected are 12.2.1.4.0 and 14.1.2.0.0. Easily exploitable vulnerability allows unauthenticated attacker with network access via T3, IIOP to compromise Service Delivery Platform. Successful attacks of this vulnerability can result in takeover of Service Delivery Platform. CVSS 3.1 Base Score 9.8 (Confidentiality, Integrity and Availability impacts). CVSS Vector: (CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H).
{
"affected": [],
"aliases": [
"CVE-2026-60388"
],
"database_specific": {
"cwe_ids": [
"CWE-306"
],
"github_reviewed": false,
"github_reviewed_at": null,
"nvd_published_at": "2026-07-21T22:17:41Z",
"severity": "CRITICAL"
},
"details": "Vulnerability in the Service Delivery Platform product of Oracle Fusion Middleware (component: Messaging Enabler). Supported versions that are affected are 12.2.1.4.0 and 14.1.2.0.0. Easily exploitable vulnerability allows unauthenticated attacker with network access via T3, IIOP to compromise Service Delivery Platform. Successful attacks of this vulnerability can result in takeover of Service Delivery Platform. CVSS 3.1 Base Score 9.8 (Confidentiality, Integrity and Availability impacts). CVSS Vector: (CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H).",
"id": "GHSA-6xc2-chqh-rqm7",
"modified": "2026-07-22T00:31:38Z",
"published": "2026-07-22T00:31:38Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2026-60388"
},
{
"type": "WEB",
"url": "https://www.oracle.com/security-alerts/cpujul2026.html"
}
],
"schema_version": "1.4.0",
"severity": [
{
"score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H",
"type": "CVSS_V3"
}
]
}
GHSA-6XPF-FQMV-9F57
Vulnerability from github – Published: 2022-01-22 00:00 – Updated: 2022-04-30 00:01Fresenius Kabi Agilia Link + version 3.0 has a default configuration page accessible without authentication. An attacker may use this functionality to change the exposed configuration values such as network settings.
{
"affected": [],
"aliases": [
"CVE-2021-33843"
],
"database_specific": {
"cwe_ids": [
"CWE-287",
"CWE-306"
],
"github_reviewed": false,
"github_reviewed_at": null,
"nvd_published_at": "2022-01-21T19:15:00Z",
"severity": "MODERATE"
},
"details": "Fresenius Kabi Agilia Link + version 3.0 has a default configuration page accessible without authentication. An attacker may use this functionality to change the exposed configuration values such as network settings.",
"id": "GHSA-6xpf-fqmv-9f57",
"modified": "2022-04-30T00:01:09Z",
"published": "2022-01-22T00:00:34Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2021-33843"
},
{
"type": "WEB",
"url": "https://www.cisa.gov/uscert/ics/advisories/icsma-21-355-01"
}
],
"schema_version": "1.4.0",
"severity": [
{
"score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N",
"type": "CVSS_V3"
}
]
}
GHSA-6XQP-6GG8-5WX6
Vulnerability from github – Published: 2026-07-22 00:31 – Updated: 2026-07-22 00:31Vulnerability in the Oracle Unified Directory product of Oracle Fusion Middleware (component: OUD Core). Supported versions that are affected are 12.2.1.4.0 and 14.1.2.1.0. Difficult to exploit vulnerability allows unauthenticated attacker with network access via LDAP to compromise Oracle Unified Directory. Successful attacks of this vulnerability can result in takeover of Oracle Unified Directory. CVSS 3.1 Base Score 8.1 (Confidentiality, Integrity and Availability impacts). CVSS Vector: (CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H).
{
"affected": [],
"aliases": [
"CVE-2026-60417"
],
"database_specific": {
"cwe_ids": [
"CWE-306"
],
"github_reviewed": false,
"github_reviewed_at": null,
"nvd_published_at": "2026-07-21T22:17:43Z",
"severity": "HIGH"
},
"details": "Vulnerability in the Oracle Unified Directory product of Oracle Fusion Middleware (component: OUD Core). Supported versions that are affected are 12.2.1.4.0 and 14.1.2.1.0. Difficult to exploit vulnerability allows unauthenticated attacker with network access via LDAP to compromise Oracle Unified Directory. Successful attacks of this vulnerability can result in takeover of Oracle Unified Directory. CVSS 3.1 Base Score 8.1 (Confidentiality, Integrity and Availability impacts). CVSS Vector: (CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H).",
"id": "GHSA-6xqp-6gg8-5wx6",
"modified": "2026-07-22T00:31:39Z",
"published": "2026-07-22T00:31:39Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2026-60417"
},
{
"type": "WEB",
"url": "https://www.oracle.com/security-alerts/cpujul2026.html"
}
],
"schema_version": "1.4.0",
"severity": [
{
"score": "CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H",
"type": "CVSS_V3"
}
]
}
GHSA-6XVF-9742-48W2
Vulnerability from github – Published: 2026-06-10 15:31 – Updated: 2026-08-13 20:51A flaw was found in migration-planner. An authenticated user can exploit this vulnerability by sending a DELETE request to the /api/v1/sources route, which lacks proper authorization and filtering. This allows for the destruction of all customer data, including sources, agents, and assessments, leading to a critical loss of availability and integrity across the entire SaaS platform.
{
"affected": [
{
"package": {
"ecosystem": "Go",
"name": "github.com/kubev2v/migration-planner"
},
"ranges": [
{
"events": [
{
"introduced": "0"
},
{
"fixed": "0.13.5"
}
],
"type": "ECOSYSTEM"
}
]
}
],
"aliases": [
"CVE-2026-53469"
],
"database_specific": {
"cwe_ids": [
"CWE-306"
],
"github_reviewed": true,
"github_reviewed_at": "2026-08-13T20:51:50Z",
"nvd_published_at": "2026-06-10T15:16:41Z",
"severity": "CRITICAL"
},
"details": "A flaw was found in migration-planner. An authenticated user can exploit this vulnerability by sending a DELETE request to the /api/v1/sources route, which lacks proper authorization and filtering. This allows for the destruction of all customer data, including sources, agents, and assessments, leading to a critical loss of availability and integrity across the entire SaaS platform.",
"id": "GHSA-6xvf-9742-48w2",
"modified": "2026-08-13T20:51:50Z",
"published": "2026-06-10T15:31:33Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2026-53469"
},
{
"type": "WEB",
"url": "https://github.com/kubev2v/migration-planner/pull/1227"
},
{
"type": "WEB",
"url": "https://github.com/kubev2v/migration-planner/commit/db4c7857bd8f8e04747a5ea0efca04b0235d6e4a"
},
{
"type": "WEB",
"url": "https://access.redhat.com/security/cve/CVE-2026-53469"
},
{
"type": "WEB",
"url": "https://bugzilla.redhat.com/show_bug.cgi?id=2487065"
},
{
"type": "PACKAGE",
"url": "https://github.com/kubev2v/migration-planner"
}
],
"schema_version": "1.4.0",
"severity": [
{
"score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:H",
"type": "CVSS_V3"
}
],
"summary": "Openshift Migration Advisor lacks proper authorization and filtering for its DELETE /api/v1/sources API"
}
GHSA-6XWV-C8H2-7XMJ
Vulnerability from github – Published: 2025-09-26 03:31 – Updated: 2025-09-26 06:30Unitree Go2, G1, H1, and B2 devices through 2025-09-20 accept any handshake secret with the unitree substring.
{
"affected": [],
"aliases": [
"CVE-2025-60251"
],
"database_specific": {
"cwe_ids": [
"CWE-306"
],
"github_reviewed": false,
"github_reviewed_at": null,
"nvd_published_at": "2025-09-26T01:15:37Z",
"severity": "MODERATE"
},
"details": "Unitree Go2, G1, H1, and B2 devices through 2025-09-20 accept any handshake secret with the unitree substring.",
"id": "GHSA-6xwv-c8h2-7xmj",
"modified": "2025-09-26T06:30:48Z",
"published": "2025-09-26T03:31:07Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2025-60251"
},
{
"type": "WEB",
"url": "https://github.com/Bin4ry/UniPwn"
},
{
"type": "WEB",
"url": "https://news.ycombinator.com/item?id=45381590"
},
{
"type": "WEB",
"url": "https://spectrum.ieee.org/unitree-robot-exploit"
}
],
"schema_version": "1.4.0",
"severity": [
{
"score": "CVSS:3.1/AV:A/AC:H/PR:N/UI:N/S:U/C:L/I:L/A:L",
"type": "CVSS_V3"
}
]
}
GHSA-6XWW-74CJ-J8XM
Vulnerability from github – Published: 2026-09-08 18:31 – Updated: 2026-09-08 18:31AVideo through 29.0 contains an information disclosure vulnerability in plugin/Live/stats.json.php that allows unauthenticated attackers to retrieve stream keys and m3u8 URLs by accessing the endpoint without authentication. Attackers can enumerate private, unlisted, and group-restricted live streams by parsing the hidden_applications array in the JSON response to obtain sensitive streaming credentials.
{
"affected": [],
"aliases": [
"CVE-2026-86727"
],
"database_specific": {
"cwe_ids": [
"CWE-306"
],
"github_reviewed": false,
"github_reviewed_at": null,
"nvd_published_at": "2026-09-08T16:18:33Z",
"severity": "HIGH"
},
"details": "AVideo through 29.0 contains an information disclosure vulnerability in plugin/Live/stats.json.php that allows unauthenticated attackers to retrieve stream keys and m3u8 URLs by accessing the endpoint without authentication. Attackers can enumerate private, unlisted, and group-restricted live streams by parsing the hidden_applications array in the JSON response to obtain sensitive streaming credentials.",
"id": "GHSA-6xww-74cj-j8xm",
"modified": "2026-09-08T18:31:53Z",
"published": "2026-09-08T18:31:53Z",
"references": [
{
"type": "WEB",
"url": "https://github.com/WWBN/AVideo/security/advisories/GHSA-8g4j-g3r6-73xr"
},
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2026-86727"
},
{
"type": "WEB",
"url": "https://www.vulncheck.com/advisories/avideo-through-29.0-information-disclosure-via-stats-json-php"
}
],
"schema_version": "1.4.0",
"severity": [
{
"score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N",
"type": "CVSS_V3"
},
{
"score": "CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X",
"type": "CVSS_V4"
}
]
}
GHSA-6XXG-24PF-J6JX
Vulnerability from github – Published: 2026-09-08 18:33 – Updated: 2026-09-08 18:33Missing authentication for critical function in Windows Cloud Files Mini Filter Driver allows an authorized attacker to perform tampering locally.
{
"affected": [],
"aliases": [
"CVE-2026-83991"
],
"database_specific": {
"cwe_ids": [
"CWE-306"
],
"github_reviewed": false,
"github_reviewed_at": null,
"nvd_published_at": "2026-09-08T18:21:09Z",
"severity": "MODERATE"
},
"details": "Missing authentication for critical function in Windows Cloud Files Mini Filter Driver allows an authorized attacker to perform tampering locally.",
"id": "GHSA-6xxg-24pf-j6jx",
"modified": "2026-09-08T18:33:38Z",
"published": "2026-09-08T18:33:38Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2026-83991"
},
{
"type": "WEB",
"url": "https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-83991"
}
],
"schema_version": "1.4.0",
"severity": [
{
"score": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:N",
"type": "CVSS_V3"
}
]
}
GHSA-7236-CCFQ-8664
Vulnerability from github – Published: 2024-11-18 09:31 – Updated: 2024-11-18 09:31A low privileged remote attacker may modify the docker settings setup of the device, leading to a limited DoS.
{
"affected": [],
"aliases": [
"CVE-2024-41968"
],
"database_specific": {
"cwe_ids": [
"CWE-306"
],
"github_reviewed": false,
"github_reviewed_at": null,
"nvd_published_at": "2024-11-18T09:15:05Z",
"severity": "MODERATE"
},
"details": "A low privileged remote attacker may modify the docker settings setup of the device, leading to a limited DoS.",
"id": "GHSA-7236-ccfq-8664",
"modified": "2024-11-18T09:31:13Z",
"published": "2024-11-18T09:31:13Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2024-41968"
},
{
"type": "WEB",
"url": "https://cert.vde.com/en/advisories/VDE-2024-047"
}
],
"schema_version": "1.4.0",
"severity": [
{
"score": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:L",
"type": "CVSS_V3"
}
]
}
GHSA-723X-W2R7-8WG2
Vulnerability from github – Published: 2022-05-24 16:47 – Updated: 2024-01-22 18:31The WPGraphQL 0.2.3 plugin for WordPress allows remote attackers to register a new user with admin privileges, whenever new user registrations are allowed. This is related to the registerUser mutation.
{
"affected": [],
"aliases": [
"CVE-2019-9879"
],
"database_specific": {
"cwe_ids": [
"CWE-306"
],
"github_reviewed": false,
"github_reviewed_at": null,
"nvd_published_at": "2019-06-10T18:29:00Z",
"severity": "CRITICAL"
},
"details": "The WPGraphQL 0.2.3 plugin for WordPress allows remote attackers to register a new user with admin privileges, whenever new user registrations are allowed. This is related to the registerUser mutation.",
"id": "GHSA-723x-w2r7-8wg2",
"modified": "2024-01-22T18:31:15Z",
"published": "2022-05-24T16:47:42Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2019-9879"
},
{
"type": "WEB",
"url": "https://github.com/pentestpartners/snippets/blob/master/wp-graphql0.2.3_exploit.py"
},
{
"type": "WEB",
"url": "https://github.com/wp-graphql/wp-graphql/releases/tag/v0.3.0"
},
{
"type": "WEB",
"url": "https://wpvulndb.com/vulnerabilities/9282"
},
{
"type": "WEB",
"url": "https://www.pentestpartners.com/security-blog/pwning-wordpress-graphql"
},
{
"type": "WEB",
"url": "http://packetstormsecurity.com/files/153025/WordPress-WPGraphQL-0.2.3-Authentication-Bypass-Information-Disclosure.html"
}
],
"schema_version": "1.4.0",
"severity": [
{
"score": "CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H",
"type": "CVSS_V3"
}
]
}
GHSA-72F3-6W86-7RV3
Vulnerability from github – Published: 2026-08-25 18:38 – Updated: 2026-08-25 18:38Summary
The self-hosted HTTP transport of @arikusi/deepseek-mcp-server exposes POST /mcp without any authentication: createMcpExpressApp is called without an authProvider and no middleware guards the route, so any network-reachable client can issue an unauthenticated initialize request and obtain a valid MCP session identifier. In reproduced testing against commit 5e1302171e99, an unauthenticated client was able to initialize a session, enumerate tools, and invoke the local deepseek_sessions tool with no credentials. The same unauthenticated session also exposes deepseek_chat, whose handler uses the server-side DEEPSEEK_API_KEY when self-hosted deployments configure one.
This issue applies to self-hosted HTTP mode, not the separately documented hosted BYOK endpoint in README.md, which expects an Authorization: Bearer ... header. Upstream self-hosted container assets enable HTTP mode by default (Dockerfile) and publish port 3000 (docker-compose.yml).
Affected Code
src/transport-http.ts:17 — createMcpExpressApp called without authProvider; no challenge is issued to incoming requests
export function createHttpApp(serverFactory: () => McpServer) {
const app = createMcpExpressApp({ host: '0.0.0.0' });
src/transport-http.ts:31 — POST /mcp handler instantiates a full MCP session for any body that satisfies isInitializeRequest, with no preceding auth check
app.post('/mcp', async (req, res) => {
const sessionId = req.headers['mcp-session-id'] as string | undefined;
if (sessionId && transports[sessionId]) {
await transports[sessionId].handleRequest(req, res, req.body);
return;
}
if (!sessionId && isInitializeRequest(req.body)) {
const transport = new StreamableHTTPServerTransport({
sessionIdGenerator: () => randomUUID(),
onsessioninitialized: (id) => {
transports[id] = transport;
console.error(`[DeepSeek MCP] HTTP session initialized: ${id}`);
},
});
const server = serverFactory();
await server.connect(transport);
await transport.handleRequest(req, res, req.body);
HTTP client → POST /mcp (no auth middleware) → transport-http.ts:41 (isInitializeRequest branch) → transport-http.ts:57–59 (serverFactory()+connect+handleRequest)
Dockerfile:12-13 — upstream container image defaults to self-hosted HTTP mode
ENV TRANSPORT=http
ENV HTTP_PORT=3000
docker-compose.yml:4-8 — upstream compose file publishes port 3000 and enables HTTP mode
services:
deepseek-mcp:
ports:
- "3000:3000"
environment:
- TRANSPORT=http
Proof of Concept
Step 1 — send unauthenticated initialize: server returns HTTP 200 and a live mcp-session-id — proves no credentials are required to establish a session.
python3 poc.py
POST /mcp HTTP/1.1
Host: 127.0.0.1:3000
Content-Type: application/json
Accept: application/json, text/event-stream
{"jsonrpc":"2.0","id":1,"method":"initialize","params":{"protocolVersion":"2024-11-05","capabilities":{},"clientInfo":{"name":"poc-client","version":"1.0"}}}
HTTP/1.1 200 OK
content-type: text/event-stream
mcp-session-id: b029fc8f-02cc-4a8c-a0e2-0223cf35b1ba
event: message
data: {"result":{"protocolVersion":"2024-11-05","capabilities":{"tools":{"listChanged":true},"prompts":{"listChanged":true},"resources":{"listChanged":true}},"serverInfo":{"name":"deepseek-mcp-server","version":"1.7.0"}},"jsonrpc":"2.0","id":1}
Step 2 — send unauthenticated tools/list on the obtained session: server returns the full tool surface (deepseek_chat, deepseek_sessions) — proves tool discovery is reachable without credentials.
POST /mcp HTTP/1.1
Host: 127.0.0.1:3000
Content-Type: application/json
Accept: application/json, text/event-stream
mcp-session-id: b029fc8f-02cc-4a8c-a0e2-0223cf35b1ba
{"jsonrpc":"2.0","id":2,"method":"tools/list","params":{}}
RESULT: PASS — tools/list returned deepseek_chat and deepseek_sessions with no credentials supplied.
Step 3 — send unauthenticated tools/call for the local deepseek_sessions tool on the obtained session: server executes the tool and returns its result with no credentials supplied.
POST /mcp HTTP/1.1
Host: 127.0.0.1:3000
Content-Type: application/json
Accept: application/json, text/event-stream
mcp-session-id: 6cf58ad1-40cc-4cd4-99a3-f5f198b8bf71
{"jsonrpc":"2.0","id":2,"method":"tools/call","params":{"name":"deepseek_sessions","arguments":{"action":"list"}}}
HTTP/1.1 200 OK
content-type: text/event-stream
event: message
data: {"result":{"content":[{"type":"text","text":"No active sessions."}]},"jsonrpc":"2.0","id":2}
Impact
In self-hosted HTTP deployments, any host with network access to port 3000 can establish an authenticated-equivalent MCP session and invoke built-in MCP tools without supplying credentials. This was verified end-to-end for session establishment, tool enumeration, and execution of the local deepseek_sessions tool.
deepseek_chat is exposed through the same unauthenticated MCP session, and its handler routes requests through the server-side DeepSeek client. That means a deployment using a valid server-side DEEPSEEK_API_KEY places billable DeepSeek operations behind an unauthenticated endpoint. However, this report's reproduced PoC used a dummy API key and did not directly validate successful upstream DeepSeek billing or quota consumption.
Remediation
Require authentication in self-hosted HTTP mode before MCP session creation. At minimum, pass an authProvider to createMcpExpressApp at transport-http.ts:17 or place equivalent authentication middleware / a reverse proxy in front of /mcp so unauthenticated clients never reach the initialize branch:
const app = createMcpExpressApp({
host: '0.0.0.0',
authProvider,
});
For deployments that only need local access, bind to 127.0.0.1 instead of 0.0.0.0 in both createMcpExpressApp and app.listen (transport-http.ts:17 and :107) as a defence-in-depth measure. Upstream docker-compose.yml currently publishes 3000:3000; changing that to 127.0.0.1:3000:3000 would reduce inadvertent exposure on multi-user or server hosts.
{
"affected": [
{
"package": {
"ecosystem": "npm",
"name": "@arikusi/deepseek-mcp-server"
},
"ranges": [
{
"events": [
{
"introduced": "1.4.2"
},
{
"fixed": "1.8.0"
}
],
"type": "ECOSYSTEM"
}
]
}
],
"aliases": [
"CVE-2026-55605"
],
"database_specific": {
"cwe_ids": [
"CWE-306"
],
"github_reviewed": true,
"github_reviewed_at": "2026-08-25T18:38:30Z",
"nvd_published_at": "2026-07-09T22:17:06Z",
"severity": "MODERATE"
},
"details": "## Summary\nThe self-hosted HTTP transport of `@arikusi/deepseek-mcp-server` exposes `POST /mcp` without any authentication: `createMcpExpressApp` is called without an `authProvider` and no middleware guards the route, so any network-reachable client can issue an unauthenticated `initialize` request and obtain a valid MCP session identifier. In reproduced testing against commit `5e1302171e99`, an unauthenticated client was able to initialize a session, enumerate tools, and invoke the local `deepseek_sessions` tool with no credentials. The same unauthenticated session also exposes `deepseek_chat`, whose handler uses the server-side `DEEPSEEK_API_KEY` when self-hosted deployments configure one.\n\nThis issue applies to self-hosted HTTP mode, not the separately documented hosted BYOK endpoint in `README.md`, which expects an `Authorization: Bearer ...` header. Upstream self-hosted container assets enable HTTP mode by default (`Dockerfile`) and publish port `3000` (`docker-compose.yml`).\n\n## Affected Code\n`src/transport-http.ts:17` \u2014 `createMcpExpressApp` called without `authProvider`; no challenge is issued to incoming requests\n\n```typescript\nexport function createHttpApp(serverFactory: () =\u003e McpServer) {\n const app = createMcpExpressApp({ host: \u00270.0.0.0\u0027 });\n```\n\n`src/transport-http.ts:31` \u2014 `POST /mcp` handler instantiates a full MCP session for any body that satisfies `isInitializeRequest`, with no preceding auth check\n\n```typescript\n app.post(\u0027/mcp\u0027, async (req, res) =\u003e {\n const sessionId = req.headers[\u0027mcp-session-id\u0027] as string | undefined;\n\n if (sessionId \u0026\u0026 transports[sessionId]) {\n await transports[sessionId].handleRequest(req, res, req.body);\n return;\n }\n\n if (!sessionId \u0026\u0026 isInitializeRequest(req.body)) {\n const transport = new StreamableHTTPServerTransport({\n sessionIdGenerator: () =\u003e randomUUID(),\n onsessioninitialized: (id) =\u003e {\n transports[id] = transport;\n console.error(`[DeepSeek MCP] HTTP session initialized: ${id}`);\n },\n });\n\n const server = serverFactory();\n await server.connect(transport);\n await transport.handleRequest(req, res, req.body);\n```\n\nHTTP client \u2192 `POST /mcp` (no auth middleware) \u2192 `transport-http.ts:41` (`isInitializeRequest` branch) \u2192 `transport-http.ts:57\u201359` (`serverFactory()+connect+handleRequest`)\n\n`Dockerfile:12-13` \u2014 upstream container image defaults to self-hosted HTTP mode\n\n```dockerfile\nENV TRANSPORT=http\nENV HTTP_PORT=3000\n```\n\n`docker-compose.yml:4-8` \u2014 upstream compose file publishes port `3000` and enables HTTP mode\n\n```yaml\nservices:\n deepseek-mcp:\n ports:\n - \"3000:3000\"\n environment:\n - TRANSPORT=http\n```\n\n## Proof of Concept\nStep 1 \u2014 send unauthenticated `initialize`: server returns HTTP 200 and a live `mcp-session-id` \u2014 proves no credentials are required to establish a session.\n\n```bash\npython3 poc.py\n```\n\n```http\nPOST /mcp HTTP/1.1\nHost: 127.0.0.1:3000\nContent-Type: application/json\nAccept: application/json, text/event-stream\n\n{\"jsonrpc\":\"2.0\",\"id\":1,\"method\":\"initialize\",\"params\":{\"protocolVersion\":\"2024-11-05\",\"capabilities\":{},\"clientInfo\":{\"name\":\"poc-client\",\"version\":\"1.0\"}}}\n```\n\n```http\nHTTP/1.1 200 OK\ncontent-type: text/event-stream\nmcp-session-id: b029fc8f-02cc-4a8c-a0e2-0223cf35b1ba\n\nevent: message\ndata: {\"result\":{\"protocolVersion\":\"2024-11-05\",\"capabilities\":{\"tools\":{\"listChanged\":true},\"prompts\":{\"listChanged\":true},\"resources\":{\"listChanged\":true}},\"serverInfo\":{\"name\":\"deepseek-mcp-server\",\"version\":\"1.7.0\"}},\"jsonrpc\":\"2.0\",\"id\":1}\n```\n\nStep 2 \u2014 send unauthenticated `tools/list` on the obtained session: server returns the full tool surface (`deepseek_chat`, `deepseek_sessions`) \u2014 proves tool discovery is reachable without credentials.\n\n```http\nPOST /mcp HTTP/1.1\nHost: 127.0.0.1:3000\nContent-Type: application/json\nAccept: application/json, text/event-stream\nmcp-session-id: b029fc8f-02cc-4a8c-a0e2-0223cf35b1ba\n\n{\"jsonrpc\":\"2.0\",\"id\":2,\"method\":\"tools/list\",\"params\":{}}\n```\n\n```text\nRESULT: PASS \u2014 tools/list returned deepseek_chat and deepseek_sessions with no credentials supplied.\n```\n\nStep 3 \u2014 send unauthenticated `tools/call` for the local `deepseek_sessions` tool on the obtained session: server executes the tool and returns its result with no credentials supplied.\n\n```http\nPOST /mcp HTTP/1.1\nHost: 127.0.0.1:3000\nContent-Type: application/json\nAccept: application/json, text/event-stream\nmcp-session-id: 6cf58ad1-40cc-4cd4-99a3-f5f198b8bf71\n\n{\"jsonrpc\":\"2.0\",\"id\":2,\"method\":\"tools/call\",\"params\":{\"name\":\"deepseek_sessions\",\"arguments\":{\"action\":\"list\"}}}\n```\n\n```http\nHTTP/1.1 200 OK\ncontent-type: text/event-stream\n\nevent: message\ndata: {\"result\":{\"content\":[{\"type\":\"text\",\"text\":\"No active sessions.\"}]},\"jsonrpc\":\"2.0\",\"id\":2}\n```\n\n## Impact\nIn self-hosted HTTP deployments, any host with network access to port `3000` can establish an authenticated-equivalent MCP session and invoke built-in MCP tools without supplying credentials. This was verified end-to-end for session establishment, tool enumeration, and execution of the local `deepseek_sessions` tool.\n\n`deepseek_chat` is exposed through the same unauthenticated MCP session, and its handler routes requests through the server-side DeepSeek client. That means a deployment using a valid server-side `DEEPSEEK_API_KEY` places billable DeepSeek operations behind an unauthenticated endpoint. However, this report\u0027s reproduced PoC used a dummy API key and did not directly validate successful upstream DeepSeek billing or quota consumption.\n\n## Remediation\nRequire authentication in self-hosted HTTP mode before MCP session creation. At minimum, pass an `authProvider` to `createMcpExpressApp` at `transport-http.ts:17` or place equivalent authentication middleware / a reverse proxy in front of `/mcp` so unauthenticated clients never reach the initialize branch:\n\n```typescript\nconst app = createMcpExpressApp({\n host: \u00270.0.0.0\u0027,\n authProvider,\n});\n```\n\nFor deployments that only need local access, bind to `127.0.0.1` instead of `0.0.0.0` in both `createMcpExpressApp` and `app.listen` (`transport-http.ts:17` and `:107`) as a defence-in-depth measure. Upstream `docker-compose.yml` currently publishes `3000:3000`; changing that to `127.0.0.1:3000:3000` would reduce inadvertent exposure on multi-user or server hosts.",
"id": "GHSA-72f3-6w86-7rv3",
"modified": "2026-08-25T18:38:30Z",
"published": "2026-08-25T18:38:30Z",
"references": [
{
"type": "WEB",
"url": "https://github.com/arikusi/deepseek-mcp-server/security/advisories/GHSA-72f3-6w86-7rv3"
},
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2026-55605"
},
{
"type": "WEB",
"url": "https://github.com/arikusi/deepseek-mcp-server/pull/4"
},
{
"type": "WEB",
"url": "https://github.com/arikusi/deepseek-mcp-server/commit/dab07ed93ddde0ab219d4cb7066785847db53a32"
},
{
"type": "PACKAGE",
"url": "https://github.com/arikusi/deepseek-mcp-server"
},
{
"type": "WEB",
"url": "https://github.com/arikusi/deepseek-mcp-server/blob/main/CHANGELOG.md#180---2026-06-14"
},
{
"type": "WEB",
"url": "https://github.com/arikusi/deepseek-mcp-server/releases/tag/v1.8.0"
}
],
"schema_version": "1.4.0",
"severity": [
{
"score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L",
"type": "CVSS_V3"
}
],
"summary": "@arikusi/deepseek-mcp-server: Missing Authentication on Self-Hosted HTTP MCP Endpoint"
}
Mitigation
- Divide the software into anonymous, normal, privileged, and administrative areas. Identify which of these areas require a proven user identity, and use a centralized authentication capability.
- Identify all potential communication channels, or other means of interaction with the software, to ensure that all channels are appropriately protected, including those channels that are assumed to be accessible only by authorized parties. Developers sometimes perform authentication at the primary channel, but open up a secondary channel that is assumed to be private. For example, a login mechanism may be listening on one network port, but after successful authentication, it may open up a second port where it waits for the connection, but avoids authentication because it assumes that only the authenticated party will connect to the port.
- In general, if the software or protocol allows a single session or user state to persist across multiple connections or channels, authentication and appropriate credential management need to be used throughout.
Mitigation MIT-15
For any security checks that are performed on the client side, ensure that these checks are duplicated on the server side, in order to avoid CWE-602. Attackers can bypass the client-side checks by modifying values after the checks have been performed, or by changing the client to remove the client-side checks entirely. Then, these modified values would be submitted to the server.
Mitigation
- Where possible, avoid implementing custom, "grow-your-own" authentication routines and consider using authentication capabilities as provided by the surrounding framework, operating system, or environment. These capabilities may avoid common weaknesses that are unique to authentication; support automatic auditing and tracking; and make it easier to provide a clear separation between authentication tasks and authorization tasks.
- In environments such as the World Wide Web, the line between authentication and authorization is sometimes blurred. If custom authentication routines are required instead of those provided by the server, then these routines must be applied to every single page, since these pages could be requested directly.
Mitigation MIT-4.5
Strategy: Libraries or Frameworks
- Use a vetted library or framework that does not allow this weakness to occur or provides constructs that make this weakness easier to avoid.
- For example, consider using libraries with authentication capabilities such as OpenSSL or the ESAPI Authenticator [REF-45].
Mitigation
When storing data in the cloud (e.g., S3 buckets, Azure blobs, Google Cloud Storage, etc.), use the provider's controls to require strong authentication for users who should be allowed to access the data [REF-1297] [REF-1298] [REF-1302].
CAPEC-12: Choosing Message Identifier
This pattern of attack is defined by the selection of messages distributed via multicast or public information channels that are intended for another client by determining the parameter value assigned to that client. This attack allows the adversary to gain access to potentially privileged information, and to possibly perpetrate other attacks through the distribution means by impersonation. If the channel/message being manipulated is an input rather than output mechanism for the system, (such as a command bus), this style of attack could be used to change the adversary's identifier to more a privileged one.
CAPEC-166: Force the System to Reset Values
An attacker forces the target into a previous state in order to leverage potential weaknesses in the target dependent upon a prior configuration or state-dependent factors. Even in cases where an attacker may not be able to directly control the configuration of the targeted application, they may be able to reset the configuration to a prior state since many applications implement reset functions.
CAPEC-216: Communication Channel Manipulation
An adversary manipulates a setting or parameter on communications channel in order to compromise its security. This can result in information exposure, insertion/removal of information from the communications stream, and/or potentially system compromise.
CAPEC-36: Using Unpublished Interfaces or Functionality
An adversary searches for and invokes interfaces or functionality that the target system designers did not intend to be publicly available. If interfaces fail to authenticate requests, the attacker may be able to invoke functionality they are not authorized for.
CAPEC-62: Cross Site Request Forgery
An attacker crafts malicious web links and distributes them (via web pages, email, etc.), typically in a targeted manner, hoping to induce users to click on the link and execute the malicious action against some third-party application. If successful, the action embedded in the malicious link will be processed and accepted by the targeted application with the users' privilege level. This type of attack leverages the persistence and implicit trust placed in user session cookies by many web applications today. In such an architecture, once the user authenticates to an application and a session cookie is created on the user's system, all following transactions for that session are authenticated using that cookie including potential actions initiated by an attacker and simply "riding" the existing session cookie.