CVE catalog

CVE-2026-49468

LiteLLM is a proxy server (AI Gateway) to call LLM…

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.

Severity: Critical · CVSS 9.5CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:H/VI:H/VA:H/SC:H/SI:H/SA:H/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X
Published: Jun 16, 2026, 10:00:00 PM UTC
Source: [NVD] · [CVE record]
EPSS: 3.03% · Oct 29, 2026

Reported versions and fixes

Each observation applies to its named package, distribution, and release. Distribution backports can fix a vulnerability while retaining an older upstream version number.

Distribution / release	Package	Version	Status	Source
PyPIRelease not reported	litellm	`1.84.0`	UnknownSource applicability is not established	PYSEC-2026-388[GHSA-4XPC-PV4P-PM3W]Jul 18, 2026, 5:30:30 PM UTC
UnknownRelease not reported	litellm	`1.84.0`	UnknownSource applicability is not established	Provider not reported

Provider details and historical evidence

Distribution / release	Package	Version	Status	Source
PyPIRelease not reported	litellm	`1.84.0`	UnknownSource applicability is not established	PYSEC-2026-388[GHSA-4XPC-PV4P-PM3W]Jul 18, 2026, 5:30:30 PM UTC
UnknownRelease not reported	litellm	`1.84.0`	UnknownSource applicability is not established	Provider not reported

Original provider fields

{
  "package_releases": [],
  "fixed_versions": [],
  "distribution_packages": [
    {
      "name": "litellm",
      "fixed_version": "1.84.0",
      "applicability_unknown": true
    },
    {
      "name": "litellm",
      "ranges": [
        {
          "type": "ECOSYSTEM",
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "1.84.0"
            }
          ]
        }
      ],
      "ecosystem": "PyPI",
      "fixed_version": "1.84.0",
      "provider_record_id": "PYSEC-2026-388",
      "applicability_unknown": true
    },
    {
      "name": "litellm",
      "ranges": [
        {
          "type": "ECOSYSTEM",
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "1.84.0"
            }
          ]
        }
      ],
      "ecosystem": "PyPI",
      "provider_url": "https://osv.dev/vulnerability/GHSA-4xpc-pv4p-pm3w",
      "fixed_version": "1.84.0",
      "provider_source": "pypi",
      "provider_record_id": "GHSA-4XPC-PV4P-PM3W",
      "provider_updated_at": "2026-07-18T17:30:30.617013067Z",
      "applicability_unknown": true
    },
    {
      "name": "litellm",
      "ranges": [
        {
          "fixed": "1.84.0",
          "introduced": "",
          "last_affected": "",
          "start_excluding": ""
        }
      ],
      "ecosystem": "cpe",
      "provider_url": "https://nvd.nist.gov/vuln/detail/CVE-2026-49468",
      "fixed_version": "1.84.0",
      "provider_source": "nvd",
      "provider_record_id": "NVD-CVE-2026-49468",
      "provider_updated_at": "2026-10-25T23:10:00.167"
    }
  ]
}

OpenFactory catalog packages

No matching packages in this catalog.

Observed: Oct 29, 2026, 10:17:47 AM UTC

References

[CERT-Bund public advisories] · [FIRST EPSS] · [National Vulnerability Database (NVD)] · [OSV Package Vulnerability Database] · [Red Hat security advisories and VEX]