{"id":"CVE-2026-89032","aliases":[],"url":"https://o3.security/vulnerability/CVE-2026-89032","summary":"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…","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.","published":"2026-09-25T17:17:18.793","modified":"2026-09-25T17:17:18.793","cvss":{"score":7.7,"severity":"HIGH","vector":"CVSS:3.1/AV:N/AC:H/PR:L/UI:R/S:C/C:H/I:H/A:N"},"epss":null,"cisaKev":null,"exploitsKnown":null,"affectedPackages":[],"fix":{"url":"https://github.com/BerriAI/litellm/commit/16db51e2cfc28e02bd460481e634a8403ea9265e","label":"BerriAI/litellm@16db51e"},"references":[{"type":"WEB","url":"https://github.com/BerriAI/litellm/commit/16db51e2cfc28e02bd460481e634a8403ea9265e"},{"type":"WEB","url":"https://github.com/BerriAI/litellm/pull/39590"},{"type":"WEB","url":"https://github.com/BerriAI/litellm/releases/tag/v1.101.0-rc.1"},{"type":"WEB","url":"https://www.vulncheck.com/advisories/berriai-litellm-rc-1-tenant-isolation-bypass-via-semantic-cache-layer"}],"provenance":{"sources":["OSV.dev","NVD","FIRST.org (EPSS)"],"lastVerified":"2026-09-25T17:17:18.793"}}