CVE-2026-49468
criticalLiteLLM is a proxy server (AI Gateway) to call LLM APIs in OpenAI (or native) format.
Vendor / product: Litellm — litellm
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.
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H Affected products
Weakness classification (CWE)
Source: NVD / CISA. “NVD-CWE-Other” and “NVD-CWE-noinfo” mean NVD could not assign a specific weakness.
Mitigation & advisories
References
- https://github.com/BerriAI/litellm/releases/tag/v1.84.0 security-advisories@github.com
- https://github.com/BerriAI/litellm/security/advisories/GHSA-4xpc-pv4p-pm3w security-advisories@github.com
- https://access.redhat.com/security/cve/CVE-2026-49468 0b0ca135-0b70-47e7-9f44-1890c2a1c46c
- https://bugzilla.redhat.com/show_bug.cgi?id=2491520 0b0ca135-0b70-47e7-9f44-1890c2a1c46c
- https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-49468.json 0b0ca135-0b70-47e7-9f44-1890c2a1c46c