PyPI/anthropic CVE-2026-34452: medium 5.3, EPSS 0.14%

Claude SDK for Python: Memory Tool Path Validation Race Condition Allows Sandbox Escape

Action: Upgrade anthropic to 0.87.0 or later.

pip install anthropic==0.87.0

Affected

Fixed versions

Sources

• osv: GHSA-w828-4qhx-vxx3
• https://github.com/anthropics/anthropic-sdk-python/security/advisories/GHSA-w828-4qhx-vxx3
• https://nvd.nist.gov/vuln/detail/CVE-2026-34452
• https://github.com/anthropics/anthropic-sdk-python/commit/6599043eee6e86dce16953fcd1fd828052052be6
• https://github.com/anthropics/anthropic-sdk-python
• https://github.com/anthropics/anthropic-sdk-python/releases/tag/v0.87.0

CVE-2026-34452 · published 2026-04-01T21:17:34Z · modified 2026-09-10T03:51:03.761941935Z · JSON