Unrated severityNVD Advisory· Published Jun 21, 2026
BerriAI litellm M2M JWT user_api_key_auth.py improper authorization
CVE-2026-12771
Description
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.
AI Insight
LLM-synthesized narrative grounded in this CVE's description and references.
Affected products
1Patches
Vulnerability mechanics
References
5- gist.github.com/YLChen-007/70e4e106527f74ddf17953ff0f6c248dmitreexploit
- vuldb.com/cve/CVE-2026-12771mitrethird-party-advisory
- vuldb.com/submit/811280mitrethird-party-advisory
- vuldb.com/vuln/372513mitrevdb-entry
- vuldb.com/vuln/372513/ctimitresignaturepermissions-required
News mentions
1- Litellm: Ten Vulnerabilities Including Auth Bypass and SSRF Disclosed TogetherVypr Intelligence · Jun 21, 2026