Is @anthropic-ai/sdk affected by CVE-2026-41686?

npm @anthropic-ai/sdk is affected in >=0.79.0 <0.91.1.

Is CVE-2026-41686 being exploited?

Not on the CISA KEV list. EPSS exploit probability is 0.1%.

medium

CVE-2026-41686

Q: Is CVE-2026-41686 being exploited?

Not on the CISA KEV list. EPSS exploit probability is 0.1%.

npm · @anthropic-ai/sdk

Summary

Claude SDK for TypeScript has Insecure Default File Permissions in Local Filesystem Memory Tool

Severity: medium
EPSS: 0.1% (p1)
Also known as: GHSA-p7fg-763f-g4gf
Published: 2026-04-29

References

https://github.com/anthropics/anthropic-sdk-typescript/security/advisories/GHSA-p7fg-763f-g4gf
https://nvd.nist.gov/vuln/detail/CVE-2026-41686
https://github.com/anthropics/anthropic-sdk-typescript

Related advisories

CVE-2026-34451 — medium · npm/@anthropic-ai/sdk

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Sources: CISA KEV (public domain), OSV.dev & GitHub Advisory Database (CC-BY-4.0), FIRST EPSS, NVD/CWE (public domain). Served live from the Stateward advisory database.