{"action":"Upgrade anthropic to 0.87.0 or later.","affected":[{"fixed":"0.87.0","introduced":"0.86.0"}],"component":"anthropic","cve_ids":["CVE-2026-34452"],"ecosystem":"PyPI","epss":0.00138,"exploited":false,"fixed_versions":["0.87.0"],"ghsa_id":"GHSA-w828-4qhx-vxx3","id":"tcs_01M5KG1RRBTCSDAQ03K93T4THC","modified_at":"2026-09-10T03:51:03.761941935Z","published_at":"2026-04-01T21:17:34Z","references":["https://osv.dev/vulnerability/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"],"severity":{"label":"medium","score":5.3},"sources":[{"source":"osv","source_id":"GHSA-w828-4qhx-vxx3","url":"https://osv.dev/vulnerability/GHSA-w828-4qhx-vxx3"}],"summary":"Claude SDK for Python: Memory Tool Path Validation Race Condition Allows Sandbox Escape"}