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9.9 Critical

CVE-2026-114612 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. From 1.87.0 until 1.100.4, 1.101.3, 1.102.2, 1.103.1, and 1.104.0-rc.2, the proxy reuses one cryptographic context for at-rest secrets and session tokens, allowing an authenticated internal user to have crafted metadata containing a forged administrator credential encrypted and returned by the API-key flow. Replaying that ciphertext as a bearer token causes the proxy to trust the forged proxy administrator identity, permitting administrative access and arbitrary commands through the MCP stdio endpoint. Versions 1.87.0 through 1.90.x require EXPERIMENTAL_UI_LOGIN to be enabled, while versions after 1.91.0 are exploitable in the default configuration. This issue was fixed in LiteLLM 1.100.4, 1.101.3, 1.102.2, 1.103.1, and 1.104.0-rc.2.

Affected products and versions

Product Affected versions Fixed in
litellm 1.104 1.104.0-rc.1 → < 1.104.0-rc.2 1.104.0-rc.2
litellm 1.103 1.103.0 → < 1.103.1 1.103.1
litellm 1.102 1.102.0 → < 1.102.2 1.102.2
litellm 1.101 1.101.0 → < 1.101.3 1.101.3
litellm 1.87 1.87.0 → < 1.100.4 1.100.4

References

Timeline

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Other CVEs of litellm

The 40 CVEs of litellm →
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