| Component | LiteLLM |
| Severity | medium (CVSS 5) |
| CVSS vector | CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:L/I:L/A:L |
| Published (NVD) | 2026-06-21 |
| Last modified | 2026-06-24 |
| Affected versions | litellm < 1.82.3 |
| Fixed in | 1.82.3 |
| Weakness | CWE-266CWE-285 |
| CISA KEV | not listed |
NVD 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.
What to do
- Upgrade LiteLLM to
1.82.3or later. - Do not expose the component's API or UI to the internet without authentication in front of it.
Sources
- NVD: CVE-2026-12771
- https://gist.github.com/YLChen-007/70e4e106527f74ddf17953ff0f6c248d
- https://vuldb.com/submit/811280
- https://vuldb.com/cve/CVE-2026-12771
- https://vuldb.com/vuln/372513
- https://vuldb.com/vuln/372513/cti
Read more
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