CVE-2026-12771: A vulnerability was identified in BerriAI litellm up to 1.82.2

Q: How do I fix CVE-2026-12771?

litellm: upgrade to 1.82.3. Exact commands for each OS are on this page.

Q: Is CVE-2026-12771 being exploited?

CVE-2026-12771 is not on the CISA Known Exploited Vulnerabilities list at the time of the last update. Check again, as this can change.

Q: What does CVE-2026-12771 affect?

CVE-2026-12771 affects litellm. Severity is medium (CVSS 5.0). 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 at

Q: How urgent is CVE-2026-12771?

Priority 32/100. Public exploit reference

Routine

MEDIUM 5.0UPGRADE

CVE-2026-12771 is a medium-severity flaw (CVSS 5.0) affecting litellm. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

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

Why this priority

Public exploit reference

A fixed release or distro patch exists.

Risk facts

CVSS score	5.0 (Medium)
Attack vector	Network (remote)
Attack complexity	High
Privileges needed	Low
User interaction	None
EPSS exploit chance	0.4% (top 63%)
CISA exploited list	No
Weakness	CWE-266, CWE-285
Published	2026-06-21
Last modified	2026-10-25

Publisher (CNA): VulDB · Vendor: litellm

Last updated 2026-10-25 · Sources: CVE Program, NVD, CISA KEV, EPSS and vendor advisories · How we score

Am I affected?

Timeline

2026-06-21 02:16 UTCPublished CVE record published
2026-10-25 23:10 UTCUpdated Record last modified

litellm litellm UPGRADE

Affected: < 1.82.3

Fixed in: 1.82.3

Safe to downgrade to: no unaffected older release

1. Check installed version

apt-cache policy litellm || rpm -q litellm || litellm --version

2. UPGRADE to 1.82.3 (Debian / Ubuntu)

sudo apt update && sudo apt install --only-upgrade litellm

2. UPGRADE (RHEL / Amazon Linux / Fedora)

sudo dnf upgrade litellm

Note

Distros often backport fixes without changing the version number. Confirm with the distro advisory or changelog.

Verify at the official source NVD · CVE Program · Report a problem with this page
Scores and fixes here are computed automatically from those and other public sources. Confirm with the vendor advisory before changing production systems.

Quick answers

How do I fix CVE-2026-12771?

litellm: upgrade to 1.82.3. Exact commands for each OS are on this page.

Is CVE-2026-12771 being exploited?

CVE-2026-12771 is not on the CISA Known Exploited Vulnerabilities list at the time of the last update. Check again, as this can change.

What does CVE-2026-12771 affect?

CVE-2026-12771 affects litellm. Severity is medium (CVSS 5.0). 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 at

How urgent is CVE-2026-12771?

Priority 32/100. Public exploit reference

Related CVEs

CVE-2026-49468 CRITICAL 9.8 UPGRADE LiteLLM is a proxy server (AI Gateway) to call LLM APIs in OpenAI (or native) format
CVE-2026-12773 HIGH 7.3 UPGRADE A weakness has been identified in BerriAI litellm up to 1.59.8
CVE-2026-12795 HIGH 7.3 UPGRADE A vulnerability was determined in BerriAI litellm up to 1.82.2
CVE-2026-12796 MEDIUM 6.3 UPGRADE A vulnerability was identified in BerriAI litellm up to 1.82.2
CVE-2026-12770 MEDIUM 5.4 UPGRADE A vulnerability was determined in BerriAI litellm up to 1.63.1

References

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