CVE-2026-12771

MEDIUM 5.0

BerriAI litellm M2M JWT user_api_key_auth.py improper authorization

CVSS Score

5.0

EPSS Score

0.0%

EPSS Percentile

0th

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.

CWE	CWE-285 CWE-266
Vendor	berriai
Product	litellm
Published	Jun 21, 2026

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CVSS v3 Breakdown

CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:L/I:L/A:L/E:P/RL:X/RC:R

Attack Vector

Attack Complexity

Privileges Required

User Interaction

Scope

Confidentiality

Integrity

Availability

Affected Versions

BerriAI / litellm

1.82.0 1.82.1 1.82.2

References

NVD ↗ CVE.org ↗ EPSS Data ↗

vuldb.com: https://vuldb.com/vuln/372513 vuldb.com: https://vuldb.com/vuln/372513/cti vuldb.com: https://vuldb.com/cve/CVE-2026-12771 vuldb.com: https://vuldb.com/submit/811280 gist.github.com: https://gist.github.com/YLChen-007/70e4e106527f74ddf17953ff0f6c248d

Credits

🔍 Eric-c (VulDB User) VulDB CNA Team