CVE-2026-12774CWE-918

BerriAI litellm MCP Server Connection Testing rest_endpoints.py _execute_with_mcp_client server-side request forgery

Medium · published June 21, 2026

CVSS v4.0
5.3
EPSS
0%
Percentile
33.0
In the wild
Unconfirmed
What it is

A security vulnerability has been detected in BerriAI litellm up to 1.82.2. Affected by this vulnerability is the function _execute_with_mcp_client of the file litellm/proxy/_experimental/mcp_server/rest_endpoints.py of the component MCP Server Connection Testing. The manipulation leads to server-side request forgery. Remote exploitation of the attack is possible. The exploit has been disclosed publicly and may be used. The vendor was contacted early about this disclosure.

The record
Technical detail
CVSS v4.0
5.3 · MEDIUM
Vector
CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:L/VI:L/VA:L/SC:N/SI:N/SA:N/E:P
EPSS
0.00400 · 33.0th percentile
Weakness
CWE-918 · Server-Side Request Forgery (SSRF)
Published
2026-06-21T03:45Z
EPSS history
Timeline
  • 21 JUN 03:45Z
    BerriAI litellm MCP Server Connection Testing rest_endpoints.py _execute_with_mcp_client server-side request forgery
    cvelistv5