{"schema":"threatline.record/2","record":{"id":"CVE-2026-89032","aliases":[],"summary":"BerriAI LiteLLM < 1.101.0-rc.1 Tenant Isolation Bypass via Semantic Cache Layer","details":"BerriAI LiteLLM before 1.101.0-rc.1 contains a tenant isolation bypass vulnerability in the semantic cache layer that allows authenticated users to read other tenants' cached responses by exploiting a metadata key mismatch between _get_semantic_cache_tenant_scope() and _get_metadata_variable_name(). Attackers holding a valid virtual key can submit semantically similar prompts on affected routes such as /v1/responses and /bedrock/* to retrieve cached responses containing other tenants' personally identifiable information, financial data, or source code, and can cause agentic front-ends to auto-execute attacker-supplied tool calls under victim credentials by returning cached function_call or tool_calls payloads to a different principal.","categories":["Unclassified"],"product":"litellm","vendor":"BerriAI","ecosystem":null,"affected_ranges":[{"source":"CVE List","source_url":"https://www.cve.org/CVERecord?id=CVE-2026-89032","source_modified_at":"2026-10-01T15:21:54.281Z","fetched_at":"2026-10-23T18:52:38.922436Z","product":"litellm","vendor":"BerriAI","versions":[{"status":"affected","version":"0","versionType":"custom","lessThan":"1.101.0-rc.1"}],"defaultStatus":"unaffected"}],"fixed_versions":[{"source":"CVE List","source_url":"https://www.cve.org/CVERecord?id=CVE-2026-89032","source_modified_at":"2026-10-01T15:21:54.281Z","fetched_at":"2026-10-23T18:52:38.922436Z","package":{"name":"litellm","ecosystem":null},"version":"1.101.0-rc.1","basis":"first unaffected version stated in the CVE record"}],"cvss":8.7,"severity":"High","kev":{"listed":false},"epss":{"probability":0.00272,"percentile":0.18569,"score_date":"2026-10-23"},"published_at":"2026-09-25T16:04:47.964Z","modified_at":"2026-10-01T15:21:54.281Z","provenance":[{"source":"CVE List","url":"https://www.cve.org/CVERecord?id=CVE-2026-89032","fetched_at":"2026-10-23T18:52:38.922436Z","source_modified_at":"2026-10-01T15:21:54.281Z"},{"source":"EPSS","url":"https://api.first.org/data/v1/epss?cve=CVE-2026-89032","fetched_at":"2026-10-23T18:42:43.628194Z","source_modified_at":"2026-10-23"}],"sources":["CVE List","EPSS"],"references":[{"source":"CVE List","url":"https://github.com/BerriAI/litellm/releases/tag/v1.101.0-rc.1","tags":["release-notes"]},{"source":"CVE List","url":"https://github.com/BerriAI/litellm/pull/39590","tags":["issue-tracking","patch"]},{"source":"CVE List","url":"https://github.com/BerriAI/litellm/commit/16db51e2cfc28e02bd460481e634a8403ea9265e","tags":["patch"]},{"source":"CVE List","url":"https://www.vulncheck.com/advisories/berriai-litellm-rc-1-tenant-isolation-bypass-via-semantic-cache-layer","tags":["third-party-advisory"]}],"locations":[],"motoko_assessment":{"status":"requires_architecture_review","automatic_remediation":false},"cve_state":"PUBLISHED","cvss_source":"CVE List","ssvc":{"exploitation":"none","automatable":"no","technical_impact":"total","assessed_at":"2026-09-30T00:00:00+00:00"},"classification":{"method":"product-first software-layer rules","rules_version":"2.1","matched_on":null,"confidence":"unknown","reviewed":false},"change_timestamp":"2026-10-01T15:21:54.281Z","content_hash":"bba1814c9aca4dd5e174bb7ab94b23e8cc70930bc28ea5bdc00b5767e4823534"}}