HIGH7.5

PYSEC-2026-1543

LiteLLM Has a Leakage of Langfuse API Keys

Details

In berriai/litellm version v1.52.1, an issue in proxy_server.py causes the leakage of Langfuse API keys when an error occurs while parsing team settings. This vulnerability exposes sensitive information, including langfuse_secret and langfuse_public_key, which can provide full access to the Langfuse project storing all requests.

Are you affected?

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Affected packages

PyPI/litellm

Introduced in: 0

No fixed version published yet for litellm (pip). Pin to a known-safe version or switch to an alternative.

References

https://nvd.nist.gov/vuln/detail/CVE-2025-0330[ADVISORY]
https://github.com/BerriAI/litellm[PACKAGE]
https://huntr.com/bounties/661b388a-44d8-4ad5-862b-4dc5b80be30a[WEB]
https://pypi.org/project/litellm[PACKAGE]
https://github.com/advisories/GHSA-879v-fggm-vxw2[ADVISORY]