GHSA-p7fg-763f-g4gf

Suggest an improvement
Source
https://github.com/advisories/GHSA-p7fg-763f-g4gf
Import Source
https://github.com/github/advisory-database/blob/main/advisories/github-reviewed/2026/04/GHSA-p7fg-763f-g4gf/GHSA-p7fg-763f-g4gf.json
JSON Data
https://api.osv.dev/v1/vulns/GHSA-p7fg-763f-g4gf
Aliases
  • CVE-2026-41686
Downstream
Published
2026-04-29T22:28:12Z
Modified
2026-05-08T01:51:09.165218Z
Severity
  • 4.8 (Medium) CVSS_V4 - CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:L/VI:L/VA:N/SC:N/SI:N/SA:N CVSS Calculator
Summary
Claude SDK for TypeScript has Insecure Default File Permissions in Local Filesystem Memory Tool
Details

The BetaLocalFilesystemMemoryTool in the Anthropic TypeScript SDK created memory files and directories using the Node.js default modes (0o666 for files, 0o777 for directories), leaving them world-readable on systems with a standard umask and world-writable in environments with a permissive umask such as many Docker base images. A local attacker on a shared host could read persisted agent state, and in containerized deployments could modify memory files to influence subsequent model behavior.

Users on the affected versions are advised to update to the latest version.

Claude SDK thanks lucasfutures for the report.

Database specific 
{
    "github_reviewed": true,
    "github_reviewed_at": "2026-04-29T22:28:12Z",
    "cwe_ids": [
        "CWE-732"
    ],
    "severity": "MODERATE",
    "nvd_published_at": "2026-05-04T19:16:03Z"
}
References

Affected packages

npm / @anthropic-ai/sdk

Package

Name
@anthropic-ai/sdk
View open source insights on deps.dev
Purl
pkg:npm/%40anthropic-ai/sdk

Affected ranges

Type
SEMVER
Events
Introduced
0.79.0
Fixed
0.91.1

Database specific

source 
"https://github.com/github/advisory-database/blob/main/advisories/github-reviewed/2026/04/GHSA-p7fg-763f-g4gf/GHSA-p7fg-763f-g4gf.json"