{"id":"CVE-2026-89032","revision":"423cc257896b4a188bd2fbbef2d0eab5","records":[{"revision":"423cc257896b4a188bd2fbbef2d0eab5","observedAt":"2026-10-23T15:48:27.903+00:00","statement":{"source":"cve-program","id":"CVE-2026-89032","aliases":[],"title":"BerriAI LiteLLM < 1.101.0-rc.1 Tenant Isolation Bypass via Semantic Cache Layer","description":"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.","state":0,"publishedAt":"2026-09-25T16:04:47.964+00:00","modifiedAt":"2026-10-01T15:21:54.281+00:00","affected":[{"ecosystem":"Vendor product","name":"litellm","ranges":[],"versions":[],"rawVersionEvidence":"{\n                    \"defaultStatus\": \"unaffected\",\n                    \"vendor\": \"BerriAI\",\n                    \"product\": \"litellm\",\n                    \"packageURL\": \"pkg:github/BerriAI/litellm\",\n                    \"repo\": \"https://github.com/BerriAI/litellm\",\n                    \"versions\": [\n                        {\n                            \"status\": \"affected\",\n                            \"version\": \"0\",\n                            \"versionType\": \"custom\",\n                            \"lessThan\": \"1.101.0-rc.1\"\n                        }\n                    ]\n                }"}],"metrics":[{"system":"CVSS 4.0","vector":"CVSS:4.0/AV:N/AC:H/AT:N/PR:L/UI:P/VC:H/VI:H/VA:N/SC:H/SI:H/SA:N","score":8.7,"severity":"HIGH"},{"system":"CVSS 3.1","vector":"CVSS:3.1/AV:N/AC:H/PR:L/UI:R/S:C/C:H/I:H/A:N","score":7.7,"severity":"HIGH"}],"references":["https://github.com/BerriAI/litellm/releases/tag/v1.101.0-rc.1","https://github.com/BerriAI/litellm/pull/39590","https://github.com/BerriAI/litellm/commit/16db51e2cfc28e02bd460481e634a8403ea9265e","https://www.vulncheck.com/advisories/berriai-litellm-rc-1-tenant-isolation-bypass-via-semantic-cache-layer"],"sourceUrl":"https://www.cve.org/CVERecord?id=CVE-2026-89032","license":"CVE Program Terms of Use","key":"cve-program:CVE-2026-89032","identifiers":["CVE-2026-89032"]},"retained":false,"historicalAffected":[]}],"coverage":[]}