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.

CVSS v3 9.8 CRITICAL

9.8^/10

CVSS v3 : CRITICAL

Vector :

Exploitability : 3.9 / Impact : 5.9

Attack Vector NETWORK

Attack Complexity LOW

Privileges Required NONE

User Interaction NONE

Confidentiality Impact HIGH

Integrity Impact HIGH

Availability Impact HIGH

Scope UNCHANGED

References

Link	Resource
https://github.com/BerriAI/litellm/releases/tag/v1.84.0	Product Release Notes
https://github.com/BerriAI/litellm/security/advisories/GHSA-4xpc-pv4p-pm3w	Mitigation Patch Vendor Advisory
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

Configurations

Configuration 1 (hide)

cpe:2.3:a:litellm:litellm:*:*:*:*:*:*:*:*

History

No history.

Information

Published : 2026-06-22 21:16

Updated : 2026-07-15 02:22

NVD link : CVE-2026-49468

Mitre link : CVE-2026-49468

CVE.ORG link : CVE-2026-49468

JSON object : View

Products Affected

litellm

litellm

CWE

CWE-290

Authentication Bypass by Spoofing

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