Common Weakness Enumeration
CWE-789
AllowedMemory Allocation with Excessive Size Value
Abstraction: Variant · Status: Draft
The product allocates memory based on an untrusted, large size value, but it does not ensure that the size is within expected limits, allowing arbitrary amounts of memory to be allocated.
499 vulnerabilities reference this CWE, most recent first.
CVE-2026-85201 (GCVE-0-2026-85201)
Vulnerability from cvelistv5 – Published: 2026-09-07 10:01 – Updated: 2026-09-08 15:06
VLAI
EPSS
VEX
Summary
In Eclipse Ankaios versions 0.1.0 through 1.0.1, the agent does not limit the length declared by a workload in a length-delimited protobuf message received through the Control Interface FIFO. A workload granted Control Interface access can specify an excessive message length, causing an unbounded memory allocation that may abort the Ankaios agent process. This results in loss of orchestration services for workloads managed by the affected agent.
Severity
SSVC
Exploitation: none
Automatable: no
Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-09-08 15:05 UTC
CWE
Assigner
References
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| Eclipse Foundation | Eclipse Ankaios |
Affected:
0.1.0 , ≤ 1.0.1
(semver)
|
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CVE-2026-84888 (GCVE-0-2026-84888)
Vulnerability from cvelistv5 – Published: 2026-09-02 21:15 – Updated: 2026-09-03 14:31
VLAI
EPSS
VEX
Title
RightNow-AI OpenFang tool_runner.rs shell_exec memory allocation
Summary
A weakness has been identified in RightNow-AI OpenFang up to 0.6.9. This vulnerability affects the function shell_exec of the file crates/openfang-runtime/src/tool_runner.rs. This manipulation causes uncontrolled memory allocation. The attack is possible to be carried out remotely. The exploit has been made available to the public and could be used for attacks. The vendor was contacted early about this disclosure but did not respond in any way.
Severity
SSVC
Exploitation: poc
Automatable: no
Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-09-03 13:15 UTC
Assigner
References
5 references
| URL | Tags |
|---|---|
| https://vuldb.com/vuln/398138 | vdb-entrytechnical-description |
| https://vuldb.com/vuln/398138/cti | signaturepermissions-required |
| https://vuldb.com/cve/CVE-2026-84888 | third-party-advisory |
| https://vuldb.com/submit/886466 | third-party-advisory |
| https://github.com/outlookgp/CVE/tree/main/OpenFa… | exploit |
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| RightNow-AI | OpenFang |
Affected:
0.6.0
Affected: 0.6.1 Affected: 0.6.2 Affected: 0.6.3 Affected: 0.6.4 Affected: 0.6.5 Affected: 0.6.6 Affected: 0.6.7 Affected: 0.6.8 Affected: 0.6.9 cpe:2.3:a:rightnow-ai:openfang:*:*:*:*:*:*:*:* |
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CVE-2026-84857 (GCVE-0-2026-84857)
Vulnerability from cvelistv5 – Published: 2026-09-02 20:00 – Updated: 2026-09-03 15:36
VLAI
EPSS
VEX
Title
sigoden aichat API Endpoint serve.rs memory allocation
Summary
A flaw has been found in sigoden aichat up to 0.30.4. This affects an unknown function of the file src/serve.rs of the component API Endpoint. This manipulation causes uncontrolled memory allocation. The attack can be initiated remotely. The exploit has been published and may be used. The vendor was contacted early about this disclosure but did not respond in any way.
Severity
SSVC
Exploitation: poc
Automatable: yes
Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-09-03 15:36 UTC
Assigner
References
5 references
| URL | Tags |
|---|---|
| https://vuldb.com/vuln/398132 | vdb-entry |
| https://vuldb.com/vuln/398132/cti | signaturepermissions-required |
| https://vuldb.com/cve/CVE-2026-84857 | third-party-advisory |
| https://vuldb.com/submit/886265 | third-party-advisory |
| https://github.com/outlookgp/CVE/tree/main/AIChat… | exploit |
Impacted products
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CVE-2026-84289 (GCVE-0-2026-84289)
Vulnerability from cvelistv5 – Published: 2026-09-01 21:45 – Updated: 2026-09-02 16:01
VLAI
EPSS
VEX
Title
NousResearch hermes-agent MCP Tool mcp_tool.py list_tools memory allocation
Summary
A vulnerability was found in NousResearch hermes-agent up to 0.18.2. This vulnerability affects the function list_tools of the file tools/mcp_tool.py of the component MCP Tool. Performing a manipulation results in uncontrolled memory allocation. It is possible to initiate the attack remotely. The exploit has been made public and could be used. The vendor was contacted early about this disclosure but did not respond in any way.
Severity
SSVC
Exploitation: poc
Automatable: no
Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-09-02 13:18 UTC
Assigner
References
5 references
| URL | Tags |
|---|---|
| https://vuldb.com/vuln/397720 | vdb-entrytechnical-description |
| https://vuldb.com/vuln/397720/cti | signaturepermissions-required |
| https://vuldb.com/cve/CVE-2026-84289 | third-party-advisory |
| https://vuldb.com/submit/882960 | third-party-advisory |
| https://github.com/lche511/cve/blob/main/Hermes_M… | exploit |
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| NousResearch | hermes-agent |
Affected:
0.18.0
Affected: 0.18.1 Affected: 0.18.2 cpe:2.3:a:nousresearch:hermes-agent:*:*:*:*:*:*:*:* |
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CVE-2026-83745 (GCVE-0-2026-83745)
Vulnerability from cvelistv5 – Published: 2026-10-02 12:16 – Updated: 2026-10-02 17:16
VLAI
EPSS
VEX
Title
Apache Thrift, Apache Thrift: WebSocket frame decoders allocate the payload buffer from the declared length, not the bytes received (Node.js, D)
Summary
Memory allocation with excessive size value, Improper handling of length parameter inconsistency vulnerability in Apache Thrift
nodejs and D lang bindings.
Both bindings' WebSocket server transports read the payload length out of the frame header and allocate that many bytes immediately, without checking that the bytes have arrived. A single ~14-byte frame therefore commits as much memory as it cares to declare -- measured at 513 MiB against the Node.js server and 2 GiB against the D transport -- and in the Node.js case the connection is left open afterwards, so the frame can simply be sent again.
This issue affects Apache Thrift before 0.25.0.
Users are recommended to upgrade to version 0.25.0, which fixes the issue.
Severity
SSVC
Exploitation: none
Automatable: yes
Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-10-02 17:16 UTC
CWE
Assigner
References
2 references
| URL | Tags |
|---|---|
| https://lists.apache.org/thread/33otcgbqd27wf6qq8… | vendor-advisory |
| https://lists.apache.org/thread/64y7f0b89mnq4xoqc… | vendor-advisory |
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| Apache Software Foundation | Apache Thrift |
Affected:
0 , < 0.25.0
(semver)
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CVE-2026-83530 (GCVE-0-2026-83530)
Vulnerability from cvelistv5 – Published: 2026-09-09 14:56 – Updated: 2026-09-09 15:15
VLAI
EPSS
VEX
Title
Uncontrolled Memory Allocation in cel-go
Summary
A user could provide an expression whose string length is longer than the ParserExpressionSizeLimit() configured on the CEL environment, and a memory allocation would occur proportional to the size of the input before the limit would be checked / enforced.
Severity
SSVC
Exploitation: none
Automatable: yes
Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-09-09 15:15 UTC
CWE
- CWE-789 - Memory Allocation with Excessive Size Value
Assigner
References
1 reference
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CVE-2026-82458 (GCVE-0-2026-82458)
Vulnerability from cvelistv5 – Published: 2026-10-02 11:30 – Updated: 2026-10-02 17:43
VLAI
EPSS
VEX
Title
Apache Thrift, Apache Thrift, Apache Thrift, Apache Thrift, Apache Thrift, Apache Thrift, Apache Thrift, Apache Thrift, Apache Thrift, Apache Thrift: Container element count not bounded by the bytes available
Summary
Memory allocation with excessive size value, Allocation of resources without limits or throttling vulnerability in Apache Thrift Go, netstd, OCaml, Erlang, JavaME, Rust, C++, Java, Kotlin and D language bindings.
This issue affects Apache Thrift: before 0.25.0.
Users are recommended to upgrade to version 0.25.0, which fixes the issue.
Severity
SSVC
Exploitation: none
Automatable: yes
Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-10-02 17:43 UTC
CWE
Assigner
References
2 references
| URL | Tags |
|---|---|
| https://lists.apache.org/thread/33otcgbqd27wf6qq8… | vendor-advisory |
| https://lists.apache.org/thread/7xqf651pvjykw0xr9… | vendor-advisory |
Impacted products
1 product
| Vendor | Product | Version | |
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| Apache Software Foundation | Apache Thrift |
Affected:
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CVE-2026-82435 (GCVE-0-2026-82435)
Vulnerability from cvelistv5 – Published: 2026-09-14 14:09 – Updated: 2026-09-14 19:55
VLAI
EPSS
VEX
Title
Apache Storm Worker: Unauthenticated Remote Memory Exhaustion in the Worker Messaging Decoder
Summary
Description
The worker's Netty message decoder is installed ahead of the SASL authentication handlers in the pipeline
and acts on frames before any authentication has taken place. It allocated buffers sized from a
length field carried in the frame, so a single frame from an unauthenticated peer able to reach a worker
slot port could drive a large allocation.
`storm.messaging.netty.authentication` defaults to false, and the decoder runs before the handler that
enforces it in any case, so no credentials are required. The attacker needs only TCP reachability to a
worker port.
The effect of a single frame at the default 768 MB worker heap has not been measured to distinguish
sustained worker loss from transient garbage-collection pressure. The severity assigned to this advisory
reflects the more conservative reading; consumers who require a precise figure should test against their own
worker heap configuration.
Mitigation
Upgrade to 3.1.0, where frames are decoded only after the handshake completes.
Users who cannot upgrade immediately should ensure that worker slot ports are reachable only from within the
cluster, as the security model already recommends, and should enable
`storm.messaging.netty.authentication` where the deployment permits it.
Credit
The ASF -- found using Claude agents to study the security of open-source projects, validated and reported by Apache Storm.
Severity
9.8 (Critical)
SSVC
Exploitation: none
Automatable: yes
Technical Impact: total
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-09-14 19:55 UTC
CWE
- CWE-789 - Memory allocation with excessive size value
Assigner
References
2 references
| URL | Tags |
|---|---|
| https://lists.apache.org/thread/wqfy7qb8c76f4c3wr… | vendor-advisory |
| http://www.openwall.com/lists/oss-security/2026/0… |
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| Apache Software Foundation | Apache Storm Worker |
Affected:
3.0.0 , < 3.1.0
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CVE-2026-81693 (GCVE-0-2026-81693)
Vulnerability from cvelistv5 – Published: 2026-08-27 14:50 – Updated: 2026-10-01 15:21
VLAI
EPSS
VEX
Title
openssl_encrypt before 1.4.9 Denial of Service via QR total field
Summary
openssl_encrypt before 1.4.9 fails to validate the total field from QR JSON payloads before materializing ranges. Attackers can supply crafted QR images with extremely large total values to trigger unbounded memory allocation and cause denial of service through out-of-memory conditions.
Severity
SSVC
Exploitation: none
Automatable: yes
Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-08-27 18:31 UTC
CWE
- CWE-789 - Memory Allocation with Excessive Size Value
Assigner
References
2 references
| URL | Tags |
|---|---|
| https://github.com/jahlives/openssl_encrypt/secur… | vendor-advisory |
| https://www.vulncheck.com/advisories/openssl-encr… | third-party-advisory |
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| jahlives | openssl_encrypt |
Affected:
0 , < 1.4.9
(semver)
Unaffected: 1.4.9 (semver) cpe:2.3:a:jahlives:openssl_encrypt:*:*:*:*:*:*:*:* |
Date Public
2026-08-12 00:00
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CVE-2026-81692 (GCVE-0-2026-81692)
Vulnerability from cvelistv5 – Published: 2026-08-27 14:50 – Updated: 2026-10-01 15:21
VLAI
EPSS
VEX
Title
openssl_encrypt before 1.4.9 Denial of Service via STREAMINFO
Summary
openssl_encrypt (pip: openssl-encrypt) versions 1.4.8 and earlier fail to validate the 36-bit STREAMINFO total_samples field of FLAC files before using it to size an allocation (np.random.randint(size=(total_samples, channels))). A ~50-byte crafted FLAC file declaring ~100 million samples causes a multi-gigabyte memory allocation, leading to out-of-memory denial of service during 'decrypt --stego-extract'. The issue is fixed in 1.4.9; both the 1.4.x and 1.5.x lines are affected.
Severity
SSVC
Exploitation: none
Automatable: yes
Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-08-31 15:57 UTC
CWE
- CWE-789 - Memory Allocation with Excessive Size Value
Assigner
References
2 references
| URL | Tags |
|---|---|
| https://github.com/jahlives/openssl_encrypt/secur… | vendor-advisory |
| https://www.vulncheck.com/advisories/openssl-encr… | third-party-advisory |
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| jahlives | openssl_encrypt |
Affected:
0 , < 1.4.9
(semver)
Unaffected: 1.4.9 (semver) cpe:2.3:a:jahlives:openssl_encrypt:*:*:*:*:*:*:*:* |
Date Public
2026-08-12 00:00
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"operator": "OR"
}
]
}
],
"datePublic": "2026-08-12T00:00:00.000Z",
"descriptions": [
{
"lang": "en",
"value": "openssl_encrypt (pip: openssl-encrypt) versions 1.4.8 and earlier fail to validate the 36-bit STREAMINFO total_samples field of FLAC files before using it to size an allocation (np.random.randint(size=(total_samples, channels))). A ~50-byte crafted FLAC file declaring ~100 million samples causes a multi-gigabyte memory allocation, leading to out-of-memory denial of service during \u0027decrypt --stego-extract\u0027. The issue is fixed in 1.4.9; both the 1.4.x and 1.5.x lines are affected."
}
],
"metrics": [
{
"cvssV4_0": {
"Automatable": "NOT_DEFINED",
"Recovery": "NOT_DEFINED",
"Safety": "NOT_DEFINED",
"attackComplexity": "LOW",
"attackRequirements": "NONE",
"attackVector": "NETWORK",
"baseScore": 8.7,
"baseSeverity": "HIGH",
"exploitMaturity": "NOT_DEFINED",
"privilegesRequired": "NONE",
"providerUrgency": "NOT_DEFINED",
"subAvailabilityImpact": "NONE",
"subConfidentialityImpact": "NONE",
"subIntegrityImpact": "NONE",
"userInteraction": "NONE",
"valueDensity": "NOT_DEFINED",
"vectorString": "CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N",
"version": "4.0",
"vulnAvailabilityImpact": "HIGH",
"vulnConfidentialityImpact": "NONE",
"vulnIntegrityImpact": "NONE",
"vulnerabilityResponseEffort": "NOT_DEFINED"
},
"format": "CVSS"
},
{
"cvssV3_1": {
"attackComplexity": "LOW",
"attackVector": "NETWORK",
"availabilityImpact": "HIGH",
"baseScore": 7.5,
"baseSeverity": "HIGH",
"confidentialityImpact": "NONE",
"integrityImpact": "NONE",
"privilegesRequired": "NONE",
"scope": "UNCHANGED",
"userInteraction": "NONE",
"vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H",
"version": "3.1"
},
"format": "CVSS"
}
],
"problemTypes": [
{
"descriptions": [
{
"cweId": "CWE-789",
"description": "Memory Allocation with Excessive Size Value",
"lang": "en",
"type": "CWE"
}
]
}
],
"providerMetadata": {
"dateUpdated": "2026-10-01T15:21:24.724Z",
"orgId": "83251b91-4cc7-4094-a5c7-464a1b83ea10",
"shortName": "VulnCheck"
},
"references": [
{
"name": "GitHub Security Advisory (GHSA-wr9q-p3rj-vqq7)",
"tags": [
"vendor-advisory"
],
"url": "https://github.com/jahlives/openssl_encrypt/security/advisories/GHSA-wr9q-p3rj-vqq7"
},
{
"name": "VulnCheck Advisory: openssl_encrypt before 1.4.9 Denial of Service via STREAMINFO",
"tags": [
"third-party-advisory"
],
"url": "https://www.vulncheck.com/advisories/openssl-encrypt-before-1.4.9-denial-of-service-via-streaminfo"
}
],
"title": "openssl_encrypt before 1.4.9 Denial of Service via STREAMINFO",
"x_generator": {
"engine": "vulncheck-endgame"
}
}
},
"cveMetadata": {
"assignerOrgId": "83251b91-4cc7-4094-a5c7-464a1b83ea10",
"assignerShortName": "VulnCheck",
"cveId": "CVE-2026-81692",
"datePublished": "2026-08-27T14:50:56.894Z",
"dateReserved": "2026-08-27T11:12:00.889Z",
"dateUpdated": "2026-10-01T15:21:24.724Z",
"state": "PUBLISHED"
},
"dataType": "CVE_RECORD",
"dataVersion": "5.2"
}
Mitigation
Implementation
Architecture and Design
Perform adequate input validation against any value that influences the amount of memory that is allocated. Define an appropriate strategy for handling requests that exceed the limit, and consider supporting a configuration option so that the administrator can extend the amount of memory to be used if necessary.
Mitigation
Operation
Run your program using system-provided resource limits for memory. This might still cause the program to crash or exit, but the impact to the rest of the system will be minimized.
No CAPEC attack patterns related to this CWE.