{"data":{"id":"b83d9f7b-74a7-4bf5-8e8a-d4c09def461a","title":"GHSA-p7fg-763f-g4gf: Claude SDK for TypeScript has Insecure Default File Permissions in Local Filesystem Memory Tool","summary":"The Anthropic TypeScript SDK's `BetaLocalFilesystemMemoryTool` created memory files and directories with the Node.js default modes (`0o666` for files, `0o777` for directories). On hosts with a standard umask these are world-readable, and under a permissive umask, such as many Docker base images, they are world-writable. A local attacker on a shared host could read persisted agent state, and in containers could modify memory files to influence later model behavior.","solution":"Users on the affected versions are advised to update to the latest version.","labels":["security"],"sourceUrl":"https://github.com/advisories/GHSA-p7fg-763f-g4gf","publishedAt":"2026-04-29T22:28:12.000Z","cveId":"CVE-2026-41686","cweIds":null,"cvssScore":null,"cvssSeverity":"medium","severity":"medium","attackType":["other"],"issueType":"vulnerability","affectedPackages":["@anthropic-ai/sdk@>= 0.79.0, < 0.91.1 (fixed: 0.91.1)"],"affectedPackageNames":["@anthropic-ai/sdk"],"affectedPackageRefs":["npm:@anthropic-ai/sdk"],"affectedVendors":["Anthropic"],"affectedVendorsRaw":["Claude SDK for TypeScript","Anthropic TypeScript SDK","BetaLocalFilesystemMemoryTool"],"classifierModel":"claude-haiku-5-5","classifierPromptVersion":"v4","summaryPromptVersion":"v2","headline":null,"headlinePromptVersion":null,"cvssVector":null,"attackVector":null,"attackComplexity":null,"privilegesRequired":null,"userInteraction":null,"exploitMaturity":"unknown","epssScore":0.00119,"epssCheckedAt":"2026-11-10T00:11:22.787Z","kevDateAdded":null,"advisoryAliases":["GHSA-p7fg-763f-g4gf"],"affectedPackagesSource":null,"affectedPackagesCheckedAt":null,"patchAvailable":true,"disclosureDate":"2026-04-29T22:28:12.000Z","fixReleasedAt":"2026-04-24T23:28:46.367Z","daysToFix":-5,"fixCheckedAt":"2026-10-29T21:37:08.241Z","capecIds":null,"crossRefCount":0,"attackSophistication":"trivial","impactType":["confidentiality","integrity"],"aiComponentTargeted":"agent","llmSpecific":true,"classifierConfidence":0.95,"researchCategory":null,"atlasIds":null,"fixes":[{"ecosystem":"npm","name":"@anthropic-ai/sdk","fixedVersion":"0.91.1","matchedVersion":"0.91.1","fixReleasedAt":"2026-04-24T23:28:46.367Z","daysToFix":-5,"match":"ecosystem","source":"tracked","status":"found","checkedAt":"2026-10-29T21:37:08.095Z"}]}}