Incorrect Authorization Affecting litellm package, versions [,1.101.0rc1)
Threat Intelligence
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Start learning- Snyk IDSNYK-PYTHON-LITELLM-20158379
- published27 Sept 2026
- disclosed25 Sept 2026
- creditUnknown
Introduced: 25 Sep 2026
NewCVE-2026-89032 (opens in a new tab)How to fix?
Upgrade litellm to version 1.101.0rc1 or higher.
Overview
litellm is a Library to easily interface with LLM API providers
Affected versions of this package are vulnerable to Incorrect Authorization via 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.