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9.4 Critical

CVE-2026-35030 LiteLLM is a proxy server (AI Gateway) to call LLM APIs in OpenAI (or native) format

Description

LiteLLM is a proxy server (AI Gateway) to call LLM APIs in OpenAI (or native) format. Prior to 1.83.0, when JWT authentication is enabled (enable_jwt_auth: true), the OIDC userinfo cache uses token[:20] as the cache key. JWT headers produced by the same signing algorithm generate identical first 20 characters. This configuration option is not enabled by default. Most instances are not affected. An unauthenticated attacker can craft a token whose first 20 characters match a legitimate user's cached token. On cache hit, the attacker inherits the legitimate user's identity and permissions. This affects deployments with JWT/OIDC authentication enabled. Fixed in v1.83.0.

Affected products and versions

Product Affected versions Fixed in
litellm 1.83 earliest → < 1.83.0 1.83.0
Red Hat Ansible Automation Platform 2.6 1777398576 earliest → < 1777398576 1777398576
Red Hat OpenShift AI 2.25 1781826406 earliest → < 1781826406 1781826406
Red Hat OpenShift AI 3.3 1782310008 earliest → < 1782310008 1782310008
Lightspeed Core Versions not published
Red Hat OpenShift AI (RHOAI) Versions not published

References

Timeline

  1. Published
  2. Last modified

Other CVEs of litellm

The 40 CVEs of litellm →
CVE-2026-114612 LiteLLM is a proxy server (AI Gateway) to call LLM APIs in OpenAI (or native) format 9.9 Critical CVE-2026-108575 A vulnerability has been found in BerriAI LiteLLM up to 1.94.0 5.3 Medium CVE-2026-108574 A flaw has been found in BerriAI LiteLLM up to 1.95.0 5.3 Medium CVE-2026-93355 LiteLLM contains a weak authentication vulnerability that allows an attacker holding a valid JWT from the configured… 7.6 High
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