{
  "affected": [
    {
      "ranges": [
        {
          "database_specific": {
            "extracted_events": [
              {
                "introduced": "0"
              },
              {
                "fixed": "1.101.0-rc.1"
              }
            ],
            "source": [
              "DESCRIPTION",
              "REFERENCES"
            ]
          },
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "eeb7732fc11fd47762ca84cc3fb7cc74235d7097"
            },
            {
              "fixed": "16db51e2cfc28e02bd460481e634a8403ea9265e"
            }
          ],
          "repo": "https://github.com/berriai/litellm",
          "type": "GIT"
        }
      ]
    }
  ],
  "database_specific": {
    "cna_assigner": "VulnCheck",
    "cwe_ids": [
      "CWE-863"
    ],
    "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/89xxx/CVE-2026-89032.json"
  },
  "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.",
  "id": "CVE-2026-89032",
  "modified": "2026-09-27T03:30:13.661547070Z",
  "published": "2026-09-25T16:04:47.964Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://github.com/BerriAI/litellm/releases/tag/v1.101.0-rc.1"
    },
    {
      "type": "ADVISORY",
      "url": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/89xxx/CVE-2026-89032.json"
    },
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-89032"
    },
    {
      "type": "ADVISORY",
      "url": "https://www.vulncheck.com/advisories/berriai-litellm-rc-1-tenant-isolation-bypass-via-semantic-cache-layer"
    },
    {
      "type": "FIX",
      "url": "https://github.com/BerriAI/litellm/commit/16db51e2cfc28e02bd460481e634a8403ea9265e"
    },
    {
      "type": "FIX",
      "url": "https://github.com/BerriAI/litellm/pull/39590"
    },
    {
      "type": "PACKAGE",
      "url": "https://github.com/BerriAI/litellm"
    }
  ],
  "schema_version": "1.9.0",
  "severity": [
    {
      "score": "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",
      "type": "CVSS_V4"
    }
  ],
  "summary": "BerriAI LiteLLM \u003c 1.101.0-rc.1 Tenant Isolation Bypass via Semantic Cache Layer"
}