gcdRadar
archive/Patch now/AIR-2026-0781
closedclosed 21 Jun 2026Patch now2 Disclosed vulnerabilityAI

CVE-2026-12771: LiteLLM M2M JWT Handler Has Improper Authorization

LiteLLM

An authorization vulnerability in LiteLLM allows remote attackers to manipulate the M2M JWT handler. No active exploitation has been confirmed.

disclosed CVENo confirmed exploitation, so this record is tracked as a disclosed vulnerability and not counted as an incident. It moves into the counts if CISA or the vendor confirms exploitation. Why

CVSS
5.0
EPSS
<0.01 · top 63% · 2026-11-13
EPSS scores by FIRST
fix status
Fix status unknown
first report
21 Jun 2026
last update
21 Jun 2026
CVE ids
CVE-2026-12771other records

Timeline · 2

  1. 21 Jun 2026CVE-2026-12771: LiteLLM: M2M JWT Handler Has Improper Authorization
  2. 21 Jun 2026CVE-2026-12771: A vulnerability was identified in BerriAI litellm up to 1.82.2.

Sources · 2

Advisories and databases

  1. 2026-06-21
    CVE-2026-12771: LiteLLM: M2M JWT Handler Has Improper Authorization
    GitHub Advisory Database · github.com/advisories/GHSA-qmf3-4767-5fg3
  2. 2026-06-21
    CVE-2026-12771: A vulnerability was identified in BerriAI litellm up to 1.82.2.
    NVD · nvd.nist.gov/vuln/detail/CVE-2026-12771

Titles and links belong to their publishers. The summary above is written by gcdRadar in its own words; data is CC BY-SA 4.0.

Classification

lane
Patch now
AI role
Attack on AI
categories
Infrastructure vulnerability
severity
2 · Disclosed vulnerability
fix status
Fix status unknown
targets
Framework / tooling
owasp llm top 10
LLM03:2025 Supply Chain
mitre atlas
no technique for these categories
tags
litellmauthorization
dates
happened 21 Jun 2026 · first reported 21 Jun 2026
origin
GitHub Advisory Database
Vulnerability record from NVD / the GitHub Advisory Database. This product uses the NVD API but is not endorsed or certified by the NVD.
record
confidence 0.95 · created 2026-10-18 07:00Z · updated 2026-10-18 10:04Z

Lane, AI role, categories and severity come from the classifier; the OWASP and ATLAS rows are derived from the categories. How these are assigned

Copy a brief

This record as a short Markdown brief, for a ticket, a chat or a coding agent.

the brief as text
# CVE-2026-12771: LiteLLM M2M JWT Handler Has Improper Authorization

https://gcdradar.vercel.app/incidents/cve-2026-12771-litellm-m2m-jwt-handler-has-improper-authoriz · AIR-2026-0781 · closed 2026-06-21

- Lane: Patch now
- Severity: 2 (Disclosed vulnerability)
- Fix status: Fix status unknown
- First reported: 2026-06-21
- AI role: Attack on AI
- Products: LiteLLM
- CVE ids: CVE-2026-12771
- CVSS: 5

## Summary

An authorization vulnerability in LiteLLM allows remote attackers to manipulate the M2M JWT handler. No active exploitation has been confirmed.

## What to do

No action recorded; read the sources below and the vendor's advisory.

## Latest updates

- 2026-06-21: CVE-2026-12771: A vulnerability was identified in BerriAI litellm up to 1.82.2. (https://nvd.nist.gov/vuln/detail/CVE-2026-12771)
- 2026-06-21: CVE-2026-12771: LiteLLM: M2M JWT Handler Has Improper Authorization (https://github.com/advisories/GHSA-qmf3-4767-5fg3)

## Sources

- 2026-06-21 GitHub Advisory Database: CVE-2026-12771: LiteLLM: M2M JWT Handler Has Improper Authorization https://github.com/advisories/GHSA-qmf3-4767-5fg3
- 2026-06-21 NVD: CVE-2026-12771: A vulnerability was identified in BerriAI litellm up to 1.82.2. https://nvd.nist.gov/vuln/detail/CVE-2026-12771

Verify against the vendor's advisory before changing production. Data CC BY-SA 4.0, https://gcdradar.vercel.app.

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