Common Weakness Enumeration

CWE-639

Allowed

Authorization Bypass Through User-Controlled Key

Abstraction: Base · Status: Incomplete

The system's authorization functionality does not prevent one user from gaining access to another user's data or record by modifying the key value identifying the data.

4567 vulnerabilities reference this CWE, most recent first.

CVE-2026-103476 (GCVE-0-2026-103476)

Vulnerability from cvelistv5 – Published: 2026-09-30 17:22 – Updated: 2026-10-01 15:34
VLAI
Title
yii2-starter-kit through 4.2.0 Unauthorized File Download via attachment-download
Summary
yii2-starter-kit through 4.2.0 fails to validate article publication status in the attachment-download endpoint, allowing unauthenticated attackers to download files from draft articles. Attackers can enumerate sequential attachment identifiers to retrieve files from unpublished articles without authentication or authorization checks.
SSVC
Exploitation: none Automatable: yes Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-10-01 15:33 UTC
CWE
  • CWE-639 - Authorization Bypass Through User-Controlled Key
Impacted products
Vendor Product Version
yii2-starter-kit yii2-starter-kit Affected: 0 , ≤ 4.2.0 (custom)
Create a notification for this product.
Date Public
2026-09-30 00:00
Show details on NVD website

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CVE-2026-103446 (GCVE-0-2026-103446)

Vulnerability from cvelistv5 – Published: 2026-09-30 17:13 – Updated: 2026-09-30 17:13
VLAI
Title
WikiLambda exposes anonymous execution of unsaved Abstract Wikipedia fragments
Summary
Authorization bypass through User-Controlled key vulnerability in The Wikimedia Foundation MediaWiki WikiLambda extension allows Authentication Bypass. This issue affects MediaWiki WikiLambda extension: 1.46.
CWE
  • CWE-639 - Authorization bypass through User-Controlled key
Impacted products
Show details on NVD website

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CVE-2026-103288 (GCVE-0-2026-103288)

Vulnerability from cvelistv5 – Published: 2026-10-01 10:42 – Updated: 2026-10-01 13:28
VLAI
Title
Ghost 5.9.0 before 6.44.1 Authorization Bypass via Comment Like
Summary
Ghost, an open-source publishing platform, contains an input validation flaw in its comment like feature in versions from 5.9.0 before 6.44.1. An authenticated member can delete comment likes or dislikes belonging to other users that they are not authorized to delete, resulting in an authorization bypass and unauthorized modification of comment engagement data.
SSVC
Exploitation: none Automatable: no Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-10-01 13:27 UTC
CWE
  • CWE-639 - Authorization Bypass Through User-Controlled Key
References
Impacted products
Vendor Product Version
TryGhost Ghost Affected: 5.9.0 , < 6.44.1 (semver)
Unaffected: 6.44.1 (semver)
    cpe:2.3:a:ghost:ghost:*:*:*:*:*:*:*:*
Create a notification for this product.
Date Public
2026-08-11 00:00
Show details on NVD website

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CVE-2026-103252 (GCVE-0-2026-103252)

Vulnerability from cvelistv5 – Published: 2026-10-01 10:41 – Updated: 2026-10-01 13:27
VLAI
Title
n8n before 1.123.80, 2.39.6, and 2.40.1 Information Disclosure via Credential Test Endpoint
Summary
n8n versions before 1.123.80, from 2.0.0 before 2.39.6, and from 2.40.0 before 2.40.1 contain an authorization bypass vulnerability in the credential test endpoint that resolves project-scoped variables without validating caller access. Attackers can specify an arbitrary project ID in the request body to interpolate sensitive variables into credential test requests sent to attacker-controlled hosts for exfiltration.
SSVC
Exploitation: none Automatable: no Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-10-01 13:27 UTC
CWE
  • CWE-639 - Authorization Bypass Through User-Controlled Key
References
Impacted products
Vendor Product Version
n8n-io n8n Affected: 0 , < 1.123.80 (semver)
Affected: 2.0.0 , < 2.39.6 (semver)
Affected: 2.40.0 , < 2.40.1 (semver)
    cpe:2.3:a:n8n:n8n:*:*:*:*:*:*:*:*
    cpe:2.3:a:n8n:n8n:*:*:*:*:*:*:*:*
    cpe:2.3:a:n8n:n8n:*:*:*:*:*:*:*:*
Create a notification for this product.
Date Public
2026-09-16 00:00
Credits
Show details on NVD website

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CVE-2026-103247 (GCVE-0-2026-103247)

Vulnerability from cvelistv5 – Published: 2026-10-01 10:41 – Updated: 2026-10-01 19:21
VLAI
Title
n8n before 1.123.80 Credential Tampering via Duplicate Node IDs
Summary
n8n versions before 1.123.80 contain a credential tampering vulnerability where duplicate node IDs bypass the workflow credential tamper guard. Attackers with editor access to shared workflows can exploit mismatched node ID and name matching to retain victim credentials and redirect secrets to attacker-controlled hosts.
SSVC
Exploitation: none Automatable: no Technical Impact: total
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-10-01 19:21 UTC
CWE
  • CWE-639 - Authorization Bypass Through User-Controlled Key
References
Impacted products
Vendor Product Version
n8n-io n8n Affected: 0 , < 1.123.80 (semver)
    cpe:2.3:a:n8n:n8n:*:*:*:*:*:*:*:*
Create a notification for this product.
Date Public
2026-09-16 00:00
Credits
Show details on NVD website

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CVE-2026-103246 (GCVE-0-2026-103246)

Vulnerability from cvelistv5 – Published: 2026-10-01 10:41 – Updated: 2026-10-01 10:41
VLAI
Title
n8n before 2.39.6 and 2.40.x before 2.40.1 Credential Disclosure via Node-Tool Introspection
Summary
n8n versions before 2.39.6 and 2.40.0 before 2.40.1 fail to validate credential ownership during inline agent node-tool introspection. Attackers can reference arbitrary credential IDs to decrypt and exfiltrate plaintext secrets to attacker-controlled hosts without ownership verification.
CWE
  • CWE-639 - Authorization Bypass Through User-Controlled Key
References
Impacted products
Vendor Product Version
n8n-io n8n Affected: 0 , < 2.39.6 (semver)
Affected: 2.40.0 , < 2.40.1 (semver)
    cpe:2.3:a:n8n:n8n:*:*:*:*:*:*:*:*
    cpe:2.3:a:n8n:n8n:*:*:*:*:*:*:*:*
Create a notification for this product.
Date Public
2026-09-16 00:00
Credits
Show details on NVD website

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CVE-2026-103237 (GCVE-0-2026-103237)

Vulnerability from cvelistv5 – Published: 2026-09-30 09:56 – Updated: 2026-09-30 17:08
VLAI
Title
MISP: Nested Model Alias Key Bypasses Sanitization to Modify Cross-Tenant Rows
Summary
MISP contains an improper input validation vulnerability in its ORM save path. When a user submits data through various endpoints (attribute add/edit, event edit, free-text import, sighting capture, shadow attribute proposal, event report creation, object reference add, user admin edit), the application sanitizes the flat record by stripping the primary key and pinning the event_id or object_id to the caller's context. However, the underlying ORM's set() method gives priority to a nested key whose name matches the model alias and discards the outer scalar fields. An authenticated user with basic write permissions can exploit this by embedding a nested block under the model alias key inside their request. The sanitization logic (id removal, event_id pinning) is applied to the outer record, but the ORM binds to the inner record instead, which carries an attacker-chosen id and event_id. This allows the attacker to overwrite, re-parent, or soft-delete rows belonging to other organizations or events they have no read access to. Impact: - Cross-tenant data integrity compromise (attribute values rewritten, objects re-parented to attacker events, rows soft-deleted) - Affects multiple entity types: Attribute, Object, EventReport, Sighting, AttributeTag, ShadowAttribute - Requires only a low-privilege authenticated account with perm_add Affected versions: <2.5.48
SSVC
Exploitation: none Automatable: no Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-09-30 17:08 UTC
CWE
  • CWE-639 - Authorization Bypass Through User-Controlled Key
  • CWE-20 - Improper Input Validation
References
Impacted products
Vendor Product Version
MISP MISP Affected: 0 , < 2.5.48 (semver)
    cpe:2.3:a:misp:misp:*:*:*:*:*:*:*:*
Create a notification for this product.
GCVE extensions
bcp-05-x-01
AI-assisted vulnerability information annotation
GCVE-BCP-05-X-01
Whole record AI-generated Human-reviewed GNA-1

Draft vulnerability metadata was generated from a git-format patch using an Ollama-hosted language model. Human validation is required before publication.

ai-computer-assisted:llm-generatedai-computer-assisted:classification
Model Source Identifier
qwen3.8:27b ollama qwen3.8:27b
bcp-05-x-02
Patch-to-vulnerability generation provenance
GCVE-BCP-05-X-02
Generator
patch2vuln.py on 2026-09-30 09:24
Model
qwen3.8:27b
Input
https://github.com/MISP/MISP/commit/9485ae40d.patch 03af388a5ac0…
Confidence
high
Commit Subject Patch SHA-256
9485ae40d334 fix: [security] A nested model alias key no longer selects 03af388a5ac0…
Fix summary

The fix introduces a defensive save() override in the base model class that refuses to persist any record where the data array simultaneously contains a nested key matching the model alias and other top-level scalar fields, logging a warning and returning false. Additionally, all code paths that sanitize and save records (free-text import, module result processing, object delta merge, attribute bulk edit, sighting capture, shadow attribute proposal, event report creation) now explicitly unset the nested alias key from the data array before calling save(), ensuring the ORM cannot be redirected to an attacker-chosen row. Controller-level request reshaping was also corrected to avoid creating self-referencing data structures.

Patch summary

Added a save() override in AppModel.php that detects and rejects ambiguous payloads containing both a nested model-alias key and outer scalars. Added unset($data[$this->alias]) calls in Event.php (free-text, module results, object attribute save), MispAttribute.php (saveAttributes, captureAttribute, editAttributeBulk), MispObject.php (deltaMerge, editObject), ShadowAttribute.php (__preCaptureMassage), and Sighting.php (captureSightings) to strip the nested alias key before save. Changed six controller files to use $this->request->data = array('Model' => $this->request->data) instead of $this->request->data['Model'] = $this->request->data, preventing self-referencing structures. Added a new regression test suite (tests/testregressions.py) with cross-tenant attack scenarios and wired it into the CI workflow.

CVSS rationale

AV:N - MISP is a network-accessible web application. AC:L - The attack requires only crafting a request with a nested alias key; no race condition or complex state is needed. AT:N - No in-transit tampering required. PR:L - An authenticated user with basic write permission (perm_add) suffices; no admin or sync role needed. UI:N - No victim interaction required. VC:N - The attacker does not gain new read access; the impact is on data they can already partially see or infer. VI:H - The attacker can overwrite, re-parent, or soft-delete rows in the same instance, causing high integrity loss to the vulnerable component's data. VA:N - Soft-delete is a state change (integrity) rather than a service disruption. SC:N - No impact on separate components' confidentiality. SI:H - The cross-tenant nature means integrity of other organizations' data (a separate security scope) is compromised. SA:N - No security mechanism is weakened.

Weakness rationale
  • CWE-639 The attacker controls the row identifier (id) inside the nested alias block, which the ORM uses to select the target row. The application's authorization and sanitization (id stripping, event_id pinning) is applied to the outer record and is bypassed because the ORM binds to the inner record. This is a direct case of a user-controlled key selecting an unauthorized resource.
  • CWE-20 The application fails to validate or strip the nested model-alias key from user-supplied data before passing it to the ORM. The ORM's set() method interprets this key as the record to save, contradicting the application's intent. The absence of validation on this structural aspect of the input is the root cause.
Attack pattern rationale
  • CAPEC-24 The attacker tampers with the structure of request parameters by injecting a nested key matching the model alias, causing the ORM to target a different row than the application intended. The outer parameters (sanitized id, pinned event_id) are effectively ignored in favor of the attacker-controlled inner parameters. This is a structural parameter tampering attack exploiting the ORM's data-binding semantics. The mapping is the closest available CAPEC; no more specific pattern for ORM-level key injection exists in the CAPEC catalog.
Assumptions to verify
  • The affected version boundary is inferred from the tag_version_boundary metadata (v2.5.48); the exact last affected release and first fixed release are not explicitly stated in the patch.
  • PR:L assumes the attacker needs only a basic authenticated account with perm_add; the regression tests confirm a non-admin, non-sync role suffices, but the minimum permission set is not exhaustively enumerated in the patch.
  • VA:N assumes soft-delete is treated as an integrity impact (data state change) rather than an availability impact; if the organization considers soft-deleted records as unavailable, VA could be raised to L.
  • CAPEC-24 (Parameter Tampering) is the closest available pattern; the specific ORM-level key-binding manipulation does not have a dedicated CAPEC entry, so the mapping is approximate.
  • The Co-Authored-By line references an AI tool (Claude Opus 5); it is listed as a tool credit, not a human remediation developer, per CVE credit role semantics.
  • The commit date is 2026-09-25; the vulnerability may have existed for an unknown duration prior to reporting.
Model comparison

Selected qwen3.8:27b by deterministic-consensus-v1
The selected result is closest to model consensus; this heuristic does not establish factual correctness and human review remains required.

Model Score Agreement Confidence Assumptions
qwen3.8:27b 5 9 high 6
Show details on NVD website

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CVE-2026-103235 (GCVE-0-2026-103235)

Vulnerability from cvelistv5 – Published: 2026-09-30 09:09 – Updated: 2026-09-30 14:32
VLAI
Title
MISP Event Delegation Mass Assignment Allows Retargeting Delegation to Arbitrary Events
Summary
MISP contains a mass assignment vulnerability in the event delegation feature. When a user with delegation permission submits a delegation request, the application authorized the user against the event identified in the URL but then persisted the entire submitted record, including caller-supplied fields such as the primary key and event_id. An authenticated attacker could inject a primary key or event_id into the delegation payload to retarget an existing delegation record to any event on the instance. Because a delegation row grants the requesting organisation read access to the event it references, this effectively granted read access to arbitrary events belonging to other organisations. If the target organisation subsequently accepted the delegation, ownership of the event was transferred and the original record was deleted. Preconditions: - An authenticated user with the delegation permission (perm_delegate) - The MISP.delegation server setting must be enabled Impact: - Confidentiality: read access to any event on the instance - Integrity: overwriting existing delegation records and transferring event ownership Affected versions: MISP < 2.5.48
SSVC
Exploitation: none Automatable: no Technical Impact: total
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-09-30 14:32 UTC
CWE
  • CWE-915 - Improperly Controlled Modification of Dynamically-Determined Object Attributes
  • CWE-639 - Authorization Bypass Through User-Controlled Key
References
Impacted products
Vendor Product Version
MISP MISP Affected: 0 , < 2.5.48 (semver)
    cpe:2.3:a:misp:misp:*:*:*:*:*:*:*:*
Create a notification for this product.
GCVE extensions
bcp-05-x-01
AI-assisted vulnerability information annotation
GCVE-BCP-05-X-01
Whole record AI-generated Human-reviewed GNA-1

Draft vulnerability metadata was generated from a git-format patch using an Ollama-hosted language model. Human validation is required before publication.

ai-computer-assisted:llm-generatedai-computer-assisted:classification
Model Source Identifier
qwen3.8:27b ollama qwen3.8:27b
bcp-05-x-02
Patch-to-vulnerability generation provenance
GCVE-BCP-05-X-02
Generator
patch2vuln.py on 2026-09-30 07:37
Model
qwen3.8:27b
Input
https://github.com/MISP/MISP/commit/d1f5684f9.patch f478751165e6…
Confidence
high
Commit Subject Patch SHA-256
d1f5684f9a19 fix: [security] Delegation requests stay bound to the event f478751165e6…
Fix summary

The delegation record is now constructed from a strict allow-list of fields rather than persisting the raw user-submitted payload. The event_id is always derived from the authorized event in the URL, the requester_org_id is always taken from the authenticated session, and the primary key is never included in the saved data. Only message, distribution, and sharing_group_id are accepted from user input, eliminating the ability to retarget or overwrite existing delegation records.

Patch summary

In EventDelegationsController::delegateEvent(), the code previously saved $this->request->data['EventDelegation'] directly after setting a few fields. The fix replaces this with an explicit allow-list array containing only event_id (from the authorized URL event), requester_org_id (from the session), org_id (resolved from submitted UUID), message, distribution, and sharing_group_id. The primary key id is never included. A regression test class DelegationRequestRetargeting was added to verify that injecting a nested EventDelegation with a foreign id and event_id does not grant read access to the victim event.

CVSS rationale

Network vector: MISP is a web application accessible over HTTP. Low complexity: a single crafted POST request suffices. No attack target manipulation. Low privileges: requires an authenticated user with perm_delegate. No user interaction: read access is granted immediately upon creating the retargeted delegation. High confidentiality: grants read access to any event on the instance. High integrity: overwrites existing delegation records and can transfer event ownership. No availability impact without victim acceptance. Scope change (SC:H, SI:H): the vulnerability crosses organisational boundaries, affecting data owned by other organisations. No sub-system availability impact.

Weakness rationale
  • CWE-915 The application persisted the entire user-submitted record including fields (id, event_id) that should not be attacker-controllable, allowing mass assignment of sensitive fields to retarget the delegation.
  • CWE-639 The authorization check validated only the event in the URL, but the attacker-supplied primary key or event_id in the payload redirected the operation to a different record, bypassing the intended authorization boundary.
Attack pattern rationale
  • CAPEC-12 The attacker manipulates hidden or additional fields in a form/API request (injecting id and event_id into the EventDelegation payload) to modify data beyond what the application intended to accept. This is the canonical mass assignment pattern: the server processes user-supplied fields it should have ignored. The mapping is direct and well-supported by the patch evidence.
Assumptions to verify
  • The affected version boundary (< 2.5.48) is inferred from the tag_version_boundary metadata showing v2.5.48 as the nearest tag with 22 commits after the fix; the exact last affected release is not explicitly stated in the patch.
  • PR:L assumes the attacker needs only the perm_delegate permission, which is a non-admin role; the exact role configuration may vary by deployment.
  • VA:N assumes the availability impact (deletion of the original event) requires victim acceptance and is therefore not a direct availability impact of the vulnerability itself.
  • The CAPEC-12 mapping is the closest standard pattern; the vulnerability also has IDOR characteristics (CWE-639) but CAPEC-12 best captures the mass-assignment mechanism demonstrated in the patch.
  • The MISP.delegation server setting must be enabled for the vulnerability to be exploitable; this is a deployment configuration assumption.
Model comparison

Selected qwen3.8:27b by deterministic-consensus-v1
The selected result is closest to model consensus; this heuristic does not establish factual correctness and human review remains required.

Model Score Agreement Confidence Assumptions
qwen3.8:27b 6 9 high 5
Show details on NVD website

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CVE-2026-103233 (GCVE-0-2026-103233)

Vulnerability from cvelistv5 – Published: 2026-09-30 16:30 – Updated: 2026-09-30 19:28
VLAI
Title
AdithyaYelloju Restaurant-Management-System Admin Area admin authorization
Summary
A security vulnerability has been detected in AdithyaYelloju Restaurant-Management-System up to 7f0e7e84255e8fcfd488e83f8f91451bbbff6b9c. This impacts an unknown function of the file /admin/ of the component Admin Area. Such manipulation of the argument ID leads to authorization bypass. The attack can be executed remotely. The exploit has been disclosed publicly and may be used. The project was informed of the problem early through an issue report but has not responded yet.
SSVC
Exploitation: poc Automatable: no Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-09-30 19:28 UTC
CWE
References
Impacted products
Vendor Product Version
AdithyaYelloju Restaurant-Management-System Affected: 7f0e7e84255e8fcfd488e83f8f91451bbbff6b9c
    cpe:2.3:a:adithyayelloju:restaurant-management-system:*:*:*:*:*:*:*:*
Create a notification for this product.
Show details on NVD website

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CVE-2026-103054 (GCVE-0-2026-103054)

Vulnerability from cvelistv5 – Published: 2026-09-30 00:19 – Updated: 2026-09-30 16:56
VLAI
Title
AiSOC 10.0.0 before 12.0.0 Unauthorized Tenant Access via MSSP
Summary
AiSOC versions before 12.0.0 contain an authorization bypass vulnerability in the MSSP module that allows authenticated users to add arbitrary tenants to portfolios they own. Attackers can submit tenant UUIDs via the add_tenants_to_portfolio endpoint to claim unclaimed tenants and read their security alerts, incidents, and posture metrics without consent.
SSVC
Exploitation: poc Automatable: no Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-09-30 16:56 UTC
CWE
  • CWE-639 - Authorization Bypass Through User-Controlled Key
Impacted products
Vendor Product Version
beenuar AiSOC Affected: 10.0.0 , < 12.0.0 (semver)
Create a notification for this product.
Date Public
2026-09-29 00:00
Credits
Show details on NVD website

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Mitigation
Architecture and Design

For each and every data access, ensure that the user has sufficient privilege to access the record that is being requested.

Mitigation
Architecture and Design Implementation

Make sure that the key that is used in the lookup of a specific user's record is not controllable externally by the user or that any tampering can be detected.

Mitigation
Architecture and Design

Use encryption in order to make it more difficult to guess other legitimate values of the key or associate a digital signature with the key so that the server can verify that there has been no tampering.

No CAPEC attack patterns related to this CWE.