CVE-2026-12771: BerriAI litellm M2M JWT user_api_key_auth.py improper authorization
A vulnerability was identified in BerriAI litellm up to 1.82.2. This affects an unknown function of the file litellm/proxy/auth/userapikeyauth.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 Software
Event History
Frequently Asked Questions
What is the severity of CVE-2026-12771?
CVE-2026-12771 has a medium severity rating of 5.
What kind of vulnerability is CVE-2026-12771?
CVE-2026-12771 is an improper authorization vulnerability in the M2M JWT Handler of BerriAI litellm.
How can CVE-2026-12771 be exploited?
CVE-2026-12771 can be exploited remotely, allowing attackers to manipulate authorization processes.
What are the potential impacts of CVE-2026-12771?
The impact of CVE-2026-12771 includes possible unauthorized access due to improper authorization.
How do I fix CVE-2026-12771?
To fix CVE-2026-12771, update to the latest version of BerriAI litellm beyond 1.82.2.