{"id":"CVE-2026-89032","title":"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_s…","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 by exploiting a metadata key mismatch between _get_s…","severity":"high","cvss":7.7,"cvssVector":"CVSS:3.1/AV:N/AC:H/PR:L/UI:R/S:C/C:H/I:H/A:N","cwe":["CWE-863","CWE-524"],"vendor":"BerriAI","product":"litellm","affected":["litellm < 1.101.0-rc.1"],"published":"2026-09-25","updated":"2026-10-01","sourceUpdated":"2026-10-01T04:18:21.403","source":"NVD","sourceUrl":"https://nvd.nist.gov/vuln/detail/CVE-2026-89032","references":[{"url":"https://github.com/BerriAI/litellm/commit/16db51e2cfc28e02bd460481e634a8403ea9265e","label":"disclosure@vulncheck.com"},{"url":"https://github.com/BerriAI/litellm/pull/39590","label":"disclosure@vulncheck.com"},{"url":"https://github.com/BerriAI/litellm/releases/tag/v1.101.0-rc.1","label":"disclosure@vulncheck.com"},{"url":"https://www.vulncheck.com/advisories/berriai-litellm-rc-1-tenant-isolation-bypass-via-semantic-cache-layer","label":"disclosure@vulncheck.com"},{"url":"https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-89032.json"},{"url":"https://access.redhat.com/security/cve/CVE-2026-89032"},{"url":"https://bugzilla.redhat.com/show_bug.cgi?id=2541509"},{"url":"https://www.cve.org/CVERecord?id=CVE-2026-89032"},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2026-89032"},{"url":"https://access.redhat.com/errata/RHSA-2026:84734"}],"tags":["nvd","cve.org","csaf","vex","red-hat"],"ssvc":{"exploitation":"none","automatable":"no","technicalImpact":"total","timestamp":"2026-09-30T15:45:14.938477Z"},"epss":0.00272,"epssPercentile":0.19452,"ingestedAt":"2026-09-25T17:13:14.030Z","patched":["openshift_ai 3.4"],"slug":"CVE-2026-89032","body":"## Overview\n\nBerriAI 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.\n\n## Remediation\n\nRefer to the linked advisories for vendor-supplied fixes and affected version ranges.\n\n## Vendor advisories\n\n- **Red Hat VEX** · Important · affected: Exploit Intelligence, Lightspeed Core, Red Hat Ansible Automation Platform 2, Red Hat OpenShift AI (RHOAI) · no fix planned: Exploit Intelligence, Lightspeed Core, Red Hat Ansible Automation Platform 2, Red Hat OpenShift AI (RHOAI) · updated 2026-10-19 · [vex](https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-89032.json)\n- **RHSA-2026:84734** · Red Hat · fixed in: Red Hat OpenShift AI 3.4 · released 2026-10-19 · [advisory](https://access.redhat.com/errata/RHSA-2026:84734)","depth":"twilight","depthScore":42,"depthScoreParts":{"impact":42.4,"likelihood":0.1,"exploitation":0,"ransomware":0},"changes":[]}