CVE-2026-12771
highpriority · track · 30EPSS 0.004 · 37 %ileEUUSEPSS · scored 2026-10-26
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
Technical severity, 0–10. One row per scoring source.
base score 0–10 · higher = more severe · hover a vector to decode⚠ sources disagree · low–high · 0.6–7.5
ssvc
A stakeholder decision — act, attend, or track — from exploitation and impact.
weaknesses
The CWE weakness classes this flaw belongs to.
affected products (5)
Products and version ranges known to be affected.
advisories (2)
Vendor and ecosystem advisories describing this.
- GHSA-qmf3-4767-5fg3LiteLLM: M2M JWT Handler Has Improper Authorization2026-06-21ghsa · osvUS
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.
- PYSEC-2026-4075LiteLLM: M2M JWT Handler Has Improper Authorization2026-10-01vendor · osvUS
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.
also known as (5)
Other names and identifiers for this entity.
sources
Which sources assert this record, and when.
references (16)
External citations — patches, advisories, analysis.
- https://gist.github.com/YLChen-007/70e4e106527f74ddf17953ff0f6c248dcnnvd
- https://github.com/BerriAI/litellm/releasesPatchcnnvd
- https://vuldb.com/cve/CVE-2026-12771cnnvd
- https://vuldb.com/submit/811280cnnvd
- https://vuldb.com/vuln/372513cnnvd
- https://vuldb.com/vuln/372513/cticnnvd
- https://gist.github.com/YLChen-007/70e4e106527f74ddf17953ff0f6c248denisa_euvd
- https://vuldb.com/cve/CVE-2026-12771enisa_euvd
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