PT-2026-51186 · Berriai · Litellm

Eric-C · Published 2026-06-21 · Updated 2026-06-21 · CVE-2026-12771

Positive Technologies (AI Summary)

CVSS v3.1

5.0

Medium

Base vector

AV:N/AC:H/PR:L/UI:N/S:U/C:L/I:L/A:L

Name of the Vulnerable Software and Affected Versions BerriAI litellm versions prior to 1.82.3

Description An issue in the M2M JWT Handler component, specifically within the file litellm/proxy/auth/user api key auth.py, leads to improper authorization. This flaw allows a remote attacker to bypass authorization mechanisms, although the attack is characterized by high complexity and difficult exploitability.

Recommendations Update to a version later than 1.82.2. As a temporary workaround, restrict access to the M2M JWT Handler component or the functions within litellm/proxy/auth/user api key auth.py to minimize the risk of exploitation.

Exploit

Fix

Improper Authorization

Incorrect Privilege Assignment

Weakness Enumeration

CWE-285

CWE-266

Related Identifiers

CVE-2026-12771

Affected Products

Litellm

References · 9

• 🔥 https://gist.github.com/YLChen-007/70e4e106527f74ddf17953ff0f6c248d · Exploit
• https://nvd.nist.gov/vuln/detail/CVE-2026-12771 · Security Note
• https://vuldb.com/vuln/372513/cti · Note
• https://twitter.com/VulmonFeeds/status/2068523876175245497 · Twitter Post
• https://vuldb.com/cve/CVE-2026-12771 · Note
• https://vuldb.com/submit/811280 · Note
• https://twitter.com/infoflowcloud/status/2068565987377508665 · Twitter Post
• https://twitter.com/CVEnew/status/2068564459933647034 · Twitter Post
• https://vuldb.com/vuln/372513 · Note