High severity · published Jun 21, 2026
CVE-2026-12771
BerriAI litellm M2M JWT user_api_key_auth.py improper authorization
7.5
CVSS
0.4%
EPSS
No
On KEV
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.
CVSS vector
CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H
Attack vector
Network
Complexity
High
Privileges
Low
User interaction
None
Confidentiality
High
Integrity
High
Availability
High
Scope
Unchanged
Exploitation
Is it being used?
Exploit prediction (EPSS)0.4% · higher than 37% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
LI
litellm · BerriAI
1.82.0; 1.82.1; 1.82.2 · source: vendor, NVD
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2026-12771
CVE.org
https://www.cve.org/CVERecord?id=CVE-2026-12771
Exploit
https://gist.github.com/YLChen-007/70e4e106527f74ddf17953ff0f6c248d
Third Party Advisory
https://vuldb.com/cve/CVE-2026-12771
Third Party Advisory
https://vuldb.com/submit/811280
Third Party Advisory
https://vuldb.com/vuln/372513
Permissions Required
https://vuldb.com/vuln/372513/cti
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