HIGH7.5

PYSEC-2026-1545

LiteLLM Vulnerable to Denial of Service (DoS) via Crafted HTTP Request

Quick fix

PYSEC-2026-1545 — litellm: upgrade to the fixed version with the command below.

pip install --upgrade 'litellm>=1.56.2'

Details

A Denial of Service (DoS) vulnerability exists in berriai/litellm version v1.44.5. This vulnerability can be exploited by appending characters, such as dashes (-), to the end of a multipart boundary in an HTTP request. The server continuously processes each character, leading to excessive resource consumption and rendering the service unavailable. The issue is unauthenticated and does not require any user interaction, impacting all users of the service.

Are you affected?

Enter the version of the package you're using.

Affected packages

PyPI/litellm

Introduced in: 0Fixed in: 1.56.2

Fixpip install --upgrade 'litellm>=1.56.2'

References

https://nvd.nist.gov/vuln/detail/CVE-2024-8984[ADVISORY]
https://github.com/BerriAI/litellm/commit/4f49f836aa844ac9b6bfbeff27e6f6b2b9cf3f61[WEB]
https://github.com/BerriAI/litellm[PACKAGE]
https://github.com/BerriAI/litellm/blob/8c5ff150f6142608ffe968e4e68429f978fda187/litellm/tests/test_spend_logs.py#L242[WEB]
https://huntr.com/bounties/554fc76b-3097-4223-b4cf-110b853e9355[WEB]
https://pypi.org/project/litellm[PACKAGE]
https://github.com/advisories/GHSA-fh2c-86xm-pm2x[ADVISORY]