{"cve":"CVE-2026-12771","nvd":{"published":"2026-06-21T02:16:41.073","modified":"2026-10-25T23:10:00.167","status":"Analyzed","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.","cvss_v4":{"vector":"CVSS:4.0/AV:N/AC:H/AT:N/PR:L/UI:N/VC:L/VI:L/VA:L/SC:N/SI:N/SA:N/E:P","score":1.3},"cvss_v3":{"version":"3.1","vector":"CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H","score":7.5},"cwes":["CWE-266","CWE-285"],"references":["https://gist.github.com/YLChen-007/70e4e106527f74ddf17953ff0f6c248d","https://vuldb.com/cve/CVE-2026-12771","https://vuldb.com/submit/811280","https://vuldb.com/vuln/372513","https://vuldb.com/vuln/372513/cti"],"products":["litellm:litellm"],"source":"nvd","synced_at":"2026-10-25T23:44:33.281319194+00:00"},"epss":{"cve":"CVE-2026-12771","score":0.00431,"percentile":0.37136,"date":"2026-10-25"},"kev":null,"osv":[{"id":"GHSA-qmf3-4767-5fg3","url":"https://osv.dev/vulnerability/GHSA-qmf3-4767-5fg3","summary":"LiteLLM: M2M JWT Handler Has Improper Authorization","modified":"2026-10-01T17:56:12.041392910Z","packages":[{"ecosystem":"PyPI","name":"litellm","purl":"pkg:pypi/litellm","ranges":["<=1.82.2"],"fixed":[]}]},{"id":"PYSEC-2026-4075","url":"https://osv.dev/vulnerability/PYSEC-2026-4075","summary":"LiteLLM: M2M JWT Handler Has Improper Authorization","modified":"2026-10-01T17:45:12.154411142Z","packages":[{"ecosystem":"PyPI","name":"litellm","purl":"pkg:pypi/litellm","ranges":["<=1.82.2"],"fixed":[]}]}],"attribution":["This product uses the NVD API but is not endorsed or certified by the NVD.","EPSS scores: FIRST Exploit Prediction Scoring System, https://www.first.org/epss","Known exploited vulnerabilities: CISA Known Exploited Vulnerabilities Catalog, https://www.cisa.gov/known-exploited-vulnerabilities-catalog","Package advisories: OSV (https://osv.dev), from the GitHub Advisory Database, PyPA, Go, RustSec and other ecosystem databases, under CC-BY 4.0 or CC0","CVE records: the CVE Program's CVE List (https://www.cve.org), under its terms of use (https://www.cve.org/Legal/TermsOfUse). CVE is a registered trademark of The MITRE Corporation; this product is not affiliated with the CVE Program."]}