CVE•Published 2026-06-22•Modified 2026-07-15•1 article on news•4 live references•NVD data

CVE-2026-49468Litellm · Litellm

Vulnerability data via NVD (ingested)

CVSS v3.1

9.8

CRITICAL

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

EPSS percentile

Exploit Prediction Scoring System · top 57% of all CVEs

Weaknesses (CWE)

CWE-290Authentication Bypass by Spoofing

Description

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.

Timeline

Published 2026-06-22

Modified 2026-07-15

External references

NVD MITRE Exploit-DB VulnCheck

Search for exposed instances

Shodan + Censys queries derived from NVD's CPE data. The vuln tag catches assets Shodan has explicitly linked to this CVE; the product / banner fingerprints find exposed instances even when the vuln tag was never applied (which is common).

Shodan · vuln tag0 hosts

vuln:CVE-2026-49468

Hosts Shodan has explicitly fingerprinted as vulnerable.

Shodan · product

product:"Litellm Litellm"

All exposed Litellm Litellm instances — cross-reference with the CVE's affected-version range.

Shodan · banner/body mention

http.html:"Litellm"

HTTP body or banner mentions "Litellm" — catches deploys Shodan didn't identify as a product.

More intel sources (5)

Shodan report

vuln:CVE-2026-49468