CVE-2026-12771

BerriAI litellm M2M JWT user_api_key_auth.py improper authorization

HIGH
7.5
CVSS Score
Published: June 21, 2026 at 01:00 AM UTC
Updated: October 25, 2026 at 11:10 PM UTC
2 products affected across 2 vendorsLiteLLMLiteLLM

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Severity
HIGH7.5
Exploit prediction
EPSS 0.4%
SSVC
PoC

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.

Affected

Our own answer: ranges merged, affected separated from platform-only, with confidence and review flags.

v < 1.82.3
Affected range stops below 1.82.3, so it looks safe — our inference, not a vendor statement

Remediation

No guide yet

No remediation guidance has been written for this CVE yet, and no fixed version or vendor advisory is recorded against it.

References (5)

VDB EntryThird Party Advisory
Source: cverecord
https://vuldb.com/vuln/372513
SignaturePermissions RequiredVDB Entry
Source: cverecord
https://vuldb.com/vuln/372513/cti
Third Party AdvisoryVDB Entry
Source: cverecord
https://vuldb.com/cve/CVE-2026-12771
Third Party AdvisoryExploitVDB Entry
Source: cverecord
https://vuldb.com/submit/811280

SSVC — Action Prioritization

SSVCPoCNot automatablePartial impact

SSVC signals action urgency (what to patch first), separate from CVSS which measures severity.

CVSS

Attack Vector
NETWORK
Complexity
HIGH
Privileges
LOW
User Interaction
NONE
Scope
UNCHANGED
Confidentiality
HIGH
Integrity
HIGH
Availability
HIGH
Vector?

Quick Info

StatusANALYZED
CWE
CWE-285CWE-266

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