{"id":"CVE-2026-12771","aliases":["EUVD-2026-38137","GHSA-qmf3-4767-5fg3","PYSEC-2026-4075"],"status":"published","title":"BerriAI litellm M2M JWT user_api_key_auth.py improper authorization","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.","severity":{"version":"4.0","score":2.3,"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","level":"low","assessor":"cna","from":"cve"},"epss":{"day":"2026-11-11","score":0.00431,"percentile":0.37831,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":false},"cwes":["CWE-266","CWE-285"],"published":"2026-06-21T01:00:12Z","modified":"2026-10-28T02:30:48Z","affected":[{"source":"ghsa","ecosystem":"PyPI","package":"litellm","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"last_affected":"1.82.2"}]}]},{"source":"osv","ecosystem":"PyPI","package":"litellm","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"last_affected":"1.82.2"}]}],"versions":["0.1.0","0.1.1","0.1.2","0.1.201","0.1.202","0.1.203","0.1.204","0.1.205","0.1.206","0.1.207","0.1.208","0.1.209","0.1.210","0.1.211","0.1.212","0.1.213","0.1.214","0.1.215","0.1.216","0.1.217","0.1.218","0.1.219","0.1.220","0.1.221","0.1.222","0.1.223","0.1.224","0.1.225","0.1.226","0.1.227","0.1.228","0.1.229","0.1.2291","0.1.230","0.1.231","0.1.232","0.1.233","0.1.234","0.1.235","0.1.236","0.1.237","0.1.238","0.1.3","0.1.31","0.1.32","0.1.330","0.1.331","0.1.34","0.1.341","0.1.343","0.1.345","0.1.347","0.1.348","0.1.349","0.1.351","0.1.352","0.1.353","0.1.354","0.1.356","0.1.360","0.1.361","0.1.362","0.1.363","0.1.364","0.1.365","0.1.366","0.1.367","0.1.368","0.1.369","0.1.370","0.1.371","0.1.372","0.1.373","0.1.375","0.1.376","0.1.379","0.1.380","0.1.381","0.1.383","0.1.384","0.1.385","0.1.386","0.1.387","0.1.388","0.1.389","0.1.392","0.1.393","0.1.394","0.1.398","0.1.399","0.1.400","0.1.401","0.1.402","0.1.403","0.1.404","0.1.405","0.1.410","0.1.411","0.1.412","0.1.415","0.1.419","0.1.420","0.1.421","0.1.422","0.1.424","0.1.425","0.1.426","0.1.429","0.1.433","0.1.434","0.1.435","0.1.436","0.1.437","0.1.438","0.1.439","0.1.440","0.1.441","0.1.442","0.1.443","0.1.444","0.1.445","0.1.446","0.1.447","0.1.448","0.1.449","0.1.450","0.1.451","0.1.452","0.1.456","0.1.457","0.1.459","0.1.460","0.1.461","0.1.464","0.1.465","0.1.475","0.1.477","0.1.479","0.1.480","0.1.481","0.1.482","0.1.486","0.1.487","0.1.488","0.1.490","0.1.491","0.1.492","0.1.493","0.1.494","0.1.495","0.1.497","0.1.500","0.1.501","0.1.504","0.1.507","0.1.508","0.1.509","0.1.510","0.1.511","0.1.512","0.1.516","0.1.517","0.1.518","0.1.520","0.1.525","0.1.530","0.1.531","0.1.533","0.1.535","0.1.536","0.1.537","0.1.538","0.1.544","0.1.546","0.1.547","0.1.548","0.1.549","0.1.550","0.1.551","0.1.552","0.1.553","0.1.554","0.1.555","0.1.556","0.1.557","0.1.558","0.1.559","0.1.560","0.1.561","0.1.562","0.1.563","0.1.567","0.1.568","0.1.569","0.1.570","0.1.574","0.1.578","0.1.580","0.1.582","0.1.583","0.1.585","0.1.586","0.1.587","0.1.590","0.1.591","0.1.593","0.1.595","0.1.596","0.1.597","0.1.598","0.1.600","0.1.601","0.1.604","0.1.605","0.1.607","0.1.609","0.1.610","0.1.615","0.1.618","0.1.619","0.1.620","0.1.621","0.1.623","0.1.624","0.1.625","0.1.626","0.1.629","0.1.630","0.1.631","0.1.632","0.1.634","0.1.635","0.1.636","0.1.638","0.1.639","0.1.641","0.1.642","0.1.643","0.1.644","0.1.645","0.1.646","0.1.647","0.1.648","0.1.649","0.1.650","0.1.651","0.1.652","0.1.674","0.1.680","0.1.681","0.1.683","0.1.685","0.1.686","0.1.687","0.1.689","0.1.690","0.1.692","0.1.693","0.1.696","0.1.697","0.1.698","0.1.700","0.1.700.dev0","0.1.700.dev1","0.1.700.dev2","0.1.700.dev3","0.1.700.dev4","0.1.700.dev5","0.1.702","0.1.704","0.1.706","0.1.714","0.1.714.dev1","0.1.715","0.1.716","0.1.719","0.1.720","0.1.721","0.1.723","0.1.724","0.1.729","0.1.736","0.1.738","0.1.743","0.1.745","0.1.746","0.1.747","0.1.748","0.1.749","0.1.750","0.1.751","0.1.758","0.1.765","0.1.769","0.1.7701","0.1.7713","0.1.772","0.1.774","0.1.780","0.1.781","0.1.784","0.1.786","0.1.788","0.1.789","0.1.793","0.1.794","0.1.805","0.1.806","0.1.807","0.1.813","0.1.814","0.1.815","0.1.816","0.1.817","0.1.818","0.1.819","0.1.820","0.1.821","0.1.824","0.10.0","0.10.1","0.11.1","0.12.10","0.12.11","0.12.12","0.12.4","0.12.4.dev1","0.12.4.dev2","0.12.5","0.12.5.dev1","0.12.7","0.12.7.dev1","0.12.8","0.12.9","0.13.0","0.13.1","0.13.1.dev1","0.13.1.dev2","0.13.1.dev3","0.13.2","0.13.2.dev1","0.13.3.dev1","0.13.3.dev2","0.13.6.dev1","0.13.6.dev2","0.13.6.dev3","0.13.7.dev1","0.14.0","0.14.0.dev1","0.14.1","0.2.5","0.2.6","0.3.0","0.3.1","0.4.0","0.4.4","0.5.2","0.5.3","0.5.4","0.5.6","0.6.0","0.6.1","0.6.2","0.6.6","0.7.1","0.7.1.dev1","0.7.1.dev2","0.7.1.dev3","0.7.10","0.7.3","0.7.4","0.7.5","0.7.9","0.8.0","0.8.1","0.8.2","0.8.3","0.8.4","0.8.5","0.8.6","0.9.0","0.9.1","0.9.2","0.9.2.dev1","1.0.0","1.0.0.dev1","1.0.3","1.0.3.dev1","1.1.0","1.1.1","1.1.2","1.1.3","1.10.0","1.10.1","1.10.10","1.10.11","1.10.2","1.10.3","1.10.4","1.10.6","1.10.8","1.10.9","1.10.dev11","1.11.0","1.11.1","1.12.0","1.12.1","1.12.2","1.12.3","1.12.5","1.12.5.dev1","1.12.6.dev1","1.12.6.dev2","1.12.6.dev3","1.12.6.dev4","1.12.6.dev5","1.13.2","1.14.0","1.14.0.dev1","1.14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Party Advisory","VDB Entry","advisory","web"]},{"url":"https://vuldb.com/vuln/372513/cti","tags":["signature","permissions-required","Permissions Required","VDB Entry","report","web"]},{"url":"https://vuldb.com/cve/CVE-2026-12771","tags":["third-party-advisory","Third Party Advisory","VDB Entry","advisory","web"]},{"url":"https://vuldb.com/submit/811280","tags":["third-party-advisory","Third Party Advisory","Exploit","VDB Entry","advisory","web"]},{"url":"https://gist.github.com/YLChen-007/70e4e106527f74ddf17953ff0f6c248d","tags":["exploit","Exploit","Third Party Advisory","evidence","web"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2026-12771","tags":["advisory"]},{"url":"https://github.com/advisories/GHSA-qmf3-4767-5fg3","tags":["advisory"]},{"url":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/12xxx/CVE-2026-12771.json","tags":["advisory"]},{"url":"https://github.com/BerriAI/litellm","tags":["package"]},{"url":"https://pypi.org/project/litellm","tags":["package"]}],"sources":{"cve":[{"id":"CVE-2026-12771","title":"BerriAI litellm M2M JWT user_api_key_auth.py improper authorization","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.","status":"published","published":"2026-06-21T01:00:12.198Z","modified":"2026-06-22T13:33:10.626Z","cvss":[{"version":"4.0","score":2.3,"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","level":"low","assessor":"cna"},{"version":"3.1","score":5,"vector":"CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:L/I:L/A:L/E:P/RL:X/RC:R","level":"medium","assessor":"cna"},{"version":"3.0","score":5,"vector":"CVSS:3.0/AV:N/AC:H/PR:L/UI:N/S:U/C:L/I:L/A:L/E:P/RL:X/RC:R","level":"medium","assessor":"cna"},{"version":"2.0","score":4.6,"vector":"AV:N/AC:H/Au:S/C:P/I:P/A:P/E:POC/RL:ND/RC:UR","assessor":"cna"}],"cwes":["CWE-285","CWE-266"],"updated_at":"2026-11-02T14:19:48.461833Z"}],"euvd":[{"id":"EUVD-2026-38137","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.","status":"published","published":"2026-06-21T01:00:12Z","modified":"2026-06-22T13:33:10Z","cvss":[{"version":"4.0","score":2.3,"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","level":"low"}],"updated_at":"2026-11-02T18:20:35.26548Z"}],"ghsa":[{"id":"GHSA-qmf3-4767-5fg3","title":"LiteLLM: M2M JWT Handler Has Improper Authorization","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.","status":"published","published":"2026-06-21T03:30:24Z","modified":"2026-09-10T19:43:36Z","cvss":[{"version":"4.0","score":1.3,"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","level":"low"},{"version":"3.1","score":5,"vector":"CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:L/I:L/A:L","level":"medium"}],"cwes":["CWE-266","CWE-285"],"updated_at":"2026-11-02T14:41:15.803194Z"}],"nvd":[{"id":"CVE-2026-12771","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.","status":"published","published":"2026-06-21T02:16:41.073Z","modified":"2026-10-25T23:10:00.167Z","cvss":[{"version":"4.0","score":1.3,"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/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X","level":"low","assessor":"secondary"},{"version":"3.1","score":5,"vector":"CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:L/I:L/A:L","level":"medium","assessor":"secondary"},{"version":"3.1","score":7.5,"vector":"CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H","level":"high","assessor":"primary"},{"version":"2.0","score":4.6,"vector":"AV:N/AC:H/Au:S/C:P/I:P/A:P","level":"medium","assessor":"secondary"}],"cwes":["CWE-266","CWE-285"],"updated_at":"2026-11-02T14:12:24.912854Z"}],"osv":[{"id":"CVE-2026-12771","title":"BerriAI litellm M2M JWT user_api_key_auth.py improper authorization","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.","status":"published","published":"2026-06-21T01:00:12.198Z","modified":"2026-10-28T02:30:48.720571749Z","cvss":[{"version":"4.0","score":1.3,"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","level":"low"}],"cwes":["CWE-266","CWE-285"],"updated_at":"2026-11-02T15:44:57.354194Z"},{"id":"GHSA-qmf3-4767-5fg3","title":"LiteLLM: M2M JWT Handler Has Improper Authorization","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.","status":"published","published":"2026-06-21T03:30:24Z","modified":"2026-10-01T17:56:12.04139291Z","cvss":[{"version":"3.1","score":5,"vector":"CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:L/I:L/A:L","level":"medium"},{"version":"4.0","score":1.3,"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","level":"low"}],"cwes":["CWE-266","CWE-285"],"updated_at":"2026-11-02T15:46:54.760124Z"},{"id":"PYSEC-2026-4075","title":"LiteLLM: M2M JWT Handler Has Improper Authorization","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.","status":"published","published":"2026-10-01T16:38:27.039832Z","modified":"2026-10-01T17:45:12.154411142Z","cvss":[{"version":"3.1","score":5,"vector":"CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:L/I:L/A:L","level":"medium"},{"version":"4.0","score":1.3,"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","level":"low"}],"updated_at":"2026-11-02T15:52:57.255153Z"}]}}