CVE•Published 2026-06-21•Modified 2026-07-15•0 articles on news•6 live references•NVD data

CVE-2026-12773Litellm · Litellm

Vulnerability data via NVD (ingested)

CVSS v3.1

7.3

HIGH

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

EPSS percentile

Exploit Prediction Scoring System · top 55% of all CVEs

Weaknesses (CWE)

CWE-287Improper Authentication CWE-303Incorrect Implementation of Authentication Algorithm

Description

A weakness has been identified in BerriAI litellm up to 1.59.8. Affected is the function UserAPIKeyAuth of the file litellm/proxy/_experimental/mcp_server/auth/user_api_key_auth_mcp.py of the component MCP Proxy. Executing a manipulation can lead to improper authentication. The attack may be launched remotely. The exploit has been made available to the public and could be used for attacks. The vendor was contacted early about this disclosure.

Timeline

Published 2026-06-21

Modified 2026-07-15

External references

NVD MITRE Exploit-DB GitHub PoC trickest/cve 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-2026-12773

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-2026-12773