CVE-2026-12771
BerriAI litellm M2M JWT user_api_key_auth.py improper authorization
LOW 1.3EPSS 0.4%
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.
- Affected
- BerriAI · litellm
- CVSS v4.0 VULDB
- 1.3 LOW
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/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 - CVSS v4.0 GitHub
- 1.3 LOW
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 - CVSS v3.1 NVD
- 7.5 HIGH
CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H - CVSS v3.1 VULDB
- 5.0 MEDIUM
CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:L/I:L/A:L - CVSS v2.0 VULDB
- 4.6 MEDIUM
AV:N/AC:H/Au:S/C:P/I:P/A:P - EPSS
- 0.43% chance of exploitation in the next 30 days, 36th percentile
- Published
- 2026-06-21
- Updated
- 2026-06-22
Proof-of-concept exploits (1)
Security advisories
- https://vuldb.com/cve/CVE-2026-12771
- https://vuldb.com/submit/811280
- https://vuldb.com/vuln/372513
- advisories/GHSA-qmf3-4767-5fg3