CVE-2026-11330: claude-mem The ComputeObservationContentHash Function Is Vulnerable Vulnerability

LOW
Advisory Identifier: GHSA-5gvr-v6qv-h5mm
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CVSS 3.6
CWE-327
Published
Advisory Summary

CVE-2026-11330 is a LOW (CVSS 3.6) the computeobservationcontenthash function is vulnerable vulnerability (CWE-327: Use of a Broken or Risky Cryptographic Algorithm) affecting claude-mem libraries in the npm ecosystem. The issue involves the computeobservationcontenthash function is vulnerable to hash collision. Remediation is available by upgrading affected packages to version 12.0.0.

CVE-2026-11330 at a Glance

CVE Identifier CVE-2026-11330
GHSA Identifier GHSA-5gvr-v6qv-h5mm
Severity LOW
CVSS v3.1 Base Score 3.6
CWE Classification CWE-327: Use of a Broken or Risky Cryptographic Algorithm
Affected Product claude-mem
Package Ecosystem npm
Published Date
Last Updated

Security Impact

CVSS: 3.6

The security impact metrics below are parsed directly from the CVSS v3.1 vector string (CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:N/I:L/A:L).

Attack Vector Local (AV:L)
Attack Complexity High (AC:H)
Privileges Required Low (PR:L)
User Interaction None (UI:N)
Scope Unchanged (S:U)
Confidentiality None (C:N)
Integrity Low (I:L)
Availability Low (A:L)

How to Fix CVE-2026-11330

To remediate this vulnerability, upgrade all affected claude-mem dependencies to a patched release. Both direct and transitive dependencies should be checked, as frameworks or security libraries may pull in vulnerable versions transitively.

claude-mem fixed: 12.0.0 
npm install claude-mem@12.0.0
Verify Direct and Transitive Dependencies

Run the following command in your project directory to verify that all resolved dependencies use the patched release: 

npm ls claude-mem

How to Check if You Are Affected

To determine whether your Node.js application is affected by CVE-2026-11330, inspect your project dependencies using npm:

npm ls claude-mem

Analyze the terminal output to locate any version of claude-mem in your dependency tree. If any resolved version matches the vulnerable ranges listed in the table below (for example, versions earlier than 12.0.0), your application is affected.

Note: The npm ls claude-mem command inspects dependencies declared in your package.json and lockfile; it does not perform automated runtime dynamic scanning.

Technical Details

Vulnerability Mechanism & Technical Analysis

This vulnerability is classified under CWE-327: Use of a Broken or Risky Cryptographic Algorithm, where the product uses a broken or risky cryptographic algorithm or protocol. In claude-mem, software state validation or input boundaries are circumvented during processing. Review the official source advisory statement below for specific affected components, classes, and reproduction details.

Source Advisory Statement

A weakness has been identified in thedotmack claude-mem up to 11.0.1. The affected element is the function computeObservationContentHash of the file src/services/sqlite/observations/store.ts of the component Observation Content Hash Handler. This manipulation causes use of weak hash. The attack can only be executed locally. The attack's complexity is rated as high. The exploitability is described as difficult. Upgrading to version 12.0.0 is sufficient to fix this issue. Patch name: f32fda8b35e9fe9329f87da65c31149362a03f97. It is suggested to upgrade the affected component.

CVE-2026-11330 Affected claude-mem Versions

1 component(s)
Fixed Versions:
12.0.0
Product / Package Ecosystem Affected Versions Fixed Version
claude-mem
npm/claude-mem
npm
< 12.0.0
12.0.0

References

NVD — CVE-2026-11330 NVD
https://nvd.nist.gov/vuln/detail/CVE-2026-11330
claude-mem Source Repository REPOSITORY
https://github.com/thedotmack/claude-mem/pull/1494
Security Fix Commit FIX COMMIT
https://github.com/thedotmack/claude-mem/commit/f32fda8b35e9fe9329f87da65c31149362a03f97
claude-mem Source Repository REPOSITORY
https://github.com/thedotmack/claude-mem
claude-mem Release RELEASE
https://github.com/thedotmack/claude-mem/releases/tag/v12.0.0
vuldb.com/cve/cve-2026-11330 WEB
https://vuldb.com/cve/CVE-2026-11330
vuldb.com/submit/832401 WEB
https://vuldb.com/submit/832401
vuldb.com/vuln/368870 WEB
https://vuldb.com/vuln/368870
vuldb.com/vuln/368870/cti WEB
https://vuldb.com/vuln/368870/cti

Frequently Asked Questions

What is CVE-2026-11330?
CVE-2026-11330 is a security vulnerability in claude-mem involving The computeObservationContentHash Function is Vulnerable to Hash Collision under CWE-327: Use of a Broken or Risky Cryptographic Algorithm.
Which claude-mem versions are affected?
Affected versions include releases prior to 12.0.0 across affected packages: claude-mem.
What version fixes CVE-2026-11330?
Upgrading to 12.0.0 (or the latest patched release for your respective branch) resolves the vulnerability.
Is claude-mem affected?
Yes, claude-mem is affected in releases prior to 12.0.0. Upgrade your dependency to 12.0.0 or later.
What is the CVSS score of CVE-2026-11330?
CVE-2026-11330 has a CVSS v3.1 base score of 3.6 (LOW) with vector string CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:N/I:L/A:L.
What CWE is associated with CVE-2026-11330?
CVE-2026-11330 is classified under CWE-327: Use of a Broken or Risky Cryptographic Algorithm (The product uses a broken or risky cryptographic algorithm or protocol.).
How can I check npm dependencies for CVE-2026-11330?
Run the dependency tree command: 'npm ls claude-mem'. This command lists direct and transitive dependencies in your build configuration so you can verify if a vulnerable version is resolved.
Machine-readable OSV JSON OSV v1.5 Schema
Normalized schema output
View Raw JSON 
{
  "schema_version" : "1.4.0",
  "id" : "GHSA-5gvr-v6qv-h5mm",
  "modified" : "2026-07-17T16:53:30Z",
  "published" : "2026-06-05T15:32:23Z",
  "aliases" : [ "CVE-2026-11330" ],
  "summary" : "claude-mem: The computeObservationContentHash Function is Vulnerable to Hash Collision",
  "details" : "A weakness has been identified in thedotmack claude-mem up to 11.0.1. The affected element is the function computeObservationContentHash of the file src/services/sqlite/observations/store.ts of the component Observation Content Hash Handler. This manipulation causes use of weak hash. The attack can only be executed locally. The attack's complexity is rated as high. The exploitability is described as difficult. Upgrading to version 12.0.0 is sufficient to fix this issue. Patch name: f32fda8b35e9fe9329f87da65c31149362a03f97. It is suggested to upgrade the affected component.",
  "severity" : [ {
    "type" : "CVSS_V3",
    "score" : "CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:N/I:L/A:L"
  }, {
    "type" : "CVSS_V4",
    "score" : "CVSS:4.0/AV:L/AC:H/AT:N/PR:L/UI:N/VC:N/VI:L/VA:L/SC:N/SI:N/SA:N"
  } ],
  "affected" : [ {
    "package" : {
      "ecosystem" : "npm",
      "name" : "claude-mem"
    },
    "ranges" : [ {
      "type" : "ECOSYSTEM",
      "events" : [ {
        "introduced" : "0"
      }, {
        "fixed" : "12.0.0"
      } ]
    } ]
  } ],
  "references" : [ {
    "type" : "ADVISORY",
    "url" : "https://nvd.nist.gov/vuln/detail/CVE-2026-11330"
  }, {
    "type" : "WEB",
    "url" : "https://github.com/thedotmack/claude-mem/pull/1494"
  }, {
    "type" : "WEB",
    "url" : "https://github.com/thedotmack/claude-mem/commit/f32fda8b35e9fe9329f87da65c31149362a03f97"
  }, {
    "type" : "PACKAGE",
    "url" : "https://github.com/thedotmack/claude-mem"
  }, {
    "type" : "WEB",
    "url" : "https://github.com/thedotmack/claude-mem/releases/tag/v12.0.0"
  }, {
    "type" : "WEB",
    "url" : "https://vuldb.com/cve/CVE-2026-11330"
  }, {
    "type" : "WEB",
    "url" : "https://vuldb.com/submit/832401"
  }, {
    "type" : "WEB",
    "url" : "https://vuldb.com/vuln/368870"
  }, {
    "type" : "WEB",
    "url" : "https://vuldb.com/vuln/368870/cti"
  } ],
  "database_specific" : {
    "cwe_ids" : [ "CWE-327" ],
    "severity" : "LOW",
    "github_reviewed" : true,
    "github_reviewed_at" : "2026-07-17T16:53:30Z",
    "nvd_published_at" : "2026-06-05T14:16:35Z"
  }
}