CVE-2026-49468
LiteLLM is a proxy server (AI Gateway) to call LLM APIs in OpenAI (or native) format. Prior to 1.84.0, a Host-header parsing flaw in the LiteLLM proxy could, under specific conditions, allow unauthenticated access to protected management routes. The auth layer derived the effective route from request.url.path in litellm/proxy/auth/auth_utils.py::get_request_route(), which Starlette reconstructs from the Host header. A crafted Host could therefore make the auth gate evaluate a different route from the one FastAPI dispatched. This vulnerability is fixed in 1.84.0.
- Score
- CVSS 3.1 9.8 Critical
- Status
- Modified - security-advisories@github.com
- Published
- 2026-06-22
- Last modified
- 2026-10-25
- Weaknesses
- CWE-290
Affected products
- Litellm (Berriai)
- Litellm (Litellm)
- Ansible Automation Platform (Redhat)
- Exploit Intelligence (Redhat)
- Openshift Ai (Redhat)
References
- https://github.com/BerriAI/litellm/security/advisories/GHSA-4xpc-pv4p-pm3w
- https://github.com/BerriAI/litellm/releases/tag/v1.84.0
- https://access.redhat.com/security/cve/CVE-2026-49468
- https://bugzilla.redhat.com/show_bug.cgi?id=2491520
- https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-49468.json
