CVE-2026-12771CWE-266CWE-285

BerriAI litellm M2M JWT user_api_key_auth.py improper authorization

Low · published June 21, 2026

CVSS v4.0
2.3
EPSS
0%
Percentile
36.3
In the wild
Unconfirmed
What it is

A vulnerability was identified in BerriAI litellm up to 1.82.2. This affects an unknown function of the file litellm/proxy/auth/user_api_key_auth.py of the component M2M JWT Handler. Such manipulation leads to improper authorization. The attack can be launched remotely. A high complexity level is associated with this attack. The exploitability is reported as difficult. The exploit is publicly available and might be used. The vendor was contacted early about this disclosure.

The record
Technical detail
CVSS v4.0
2.3 · LOW
Vector
CVSS:4.0/AV:N/AC:H/AT:N/PR:L/UI:N/VC:L/VI:L/VA:L/SC:N/SI:N/SA:N/E:P
EPSS
0.00431 · 36.3th percentile
Weaknesses
CWE-266 · Incorrect Privilege Assignment; CWE-285 · Improper Authorization
Published
2026-06-21T01:00Z
EPSS history
Timeline
  • 21 JUN 01:00Z
    BerriAI litellm M2M JWT user_api_key_auth.py improper authorization
    cvelistv5