CVE-2026-89032
highpriority · track · 31OT risk · elevatedEPSS 0.003 · 19 %ileDEEPSS · scored 2026-10-27
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.
cvss
Technical severity, 0–10. One row per scoring source.
base score 0–10 · higher = more severe · hover a vector to decode⚠ sources disagree · medium–high · 5.7–8.7
ssvc
A stakeholder decision — act, attend, or track — from exploitation and impact.
weaknesses
The CWE weakness classes this flaw belongs to.
affected products (3)
Products and version ranges known to be affected.
advisories (1)
Vendor and ecosystem advisories describing this.
- WID-SEC-W-2026-3599LiteLLM: Schwachstelle ermöglicht Umgehen von SicherheitsvorkehrungenDeutsch2026-09-27csaf · cert_bundDE
Ein entfernter, authentisierter Angreifer kann eine Schwachstelle in LiteLLM ausnutzen, um Sicherheitsvorkehrungen zu umgehen und so Informationen offenzulegen sowie unbefugte Aktionen durchzuführen.
sources
Which sources assert this record, and when.
references (4) nvd
External citations — patches, advisories, analysis.
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