CVE-2026-12773

A weakness has been identified in BerriAI litellm up to 1.59.8. Affected is the function UserAPIKeyAuth of the file litellm/proxy/_experimental/mcp_server/auth/user_api_key_auth_mcp.py of the component MCP Proxy. Executing a manipulation can lead to improper authentication. The attack may be launched remotely. The exploit has been made available to the public and could be used for attacks. The vendor was contacted early about this disclosure.
Configurations

Configuration 1 (hide)

cpe:2.3:a:litellm:litellm:*:*:*:*:*:*:*:*

History

30 Jun 2026, 03:17

Type Values Removed Values Added
CWE CWE-303
References
  • () https://access.redhat.com/security/cve/CVE-2026-12773 -
  • () https://bugzilla.redhat.com/show_bug.cgi?id=2491112 -
  • () https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-12773.json -
References () https://vuldb.com/submit/811282 - Third Party Advisory, Exploit, VDB Entry () https://vuldb.com/submit/811282 - Exploit, Third Party Advisory, VDB Entry

24 Jun 2026, 20:27

Type Values Removed Values Added
First Time Litellm
Litellm litellm
CPE cpe:2.3:a:litellm:litellm:*:*:*:*:*:*:*:*
References () https://gist.github.com/YLChen-007/3cfaad10a69d7a15e4d4d458cb53309e - () https://gist.github.com/YLChen-007/3cfaad10a69d7a15e4d4d458cb53309e - Exploit, Third Party Advisory
References () https://vuldb.com/cve/CVE-2026-12773 - () https://vuldb.com/cve/CVE-2026-12773 - Third Party Advisory, VDB Entry
References () https://vuldb.com/submit/811282 - () https://vuldb.com/submit/811282 - Third Party Advisory, Exploit, VDB Entry
References () https://vuldb.com/vuln/372515 - () https://vuldb.com/vuln/372515 - Third Party Advisory, VDB Entry
References () https://vuldb.com/vuln/372515/cti - () https://vuldb.com/vuln/372515/cti - Permissions Required, VDB Entry

22 Jun 2026, 19:16

Type Values Removed Values Added
References () https://vuldb.com/submit/811282 - () https://vuldb.com/submit/811282 -

21 Jun 2026, 04:16

Type Values Removed Values Added
New CVE

Information

Published : 2026-06-21 04:16

Updated : 2026-07-15 02:18


NVD link : CVE-2026-12773

Mitre link : CVE-2026-12773

CVE.ORG link : CVE-2026-12773


JSON object : View

Products Affected

litellm

  • litellm
CWE
CWE-287

Improper Authentication

CWE-303

Incorrect Implementation of Authentication Algorithm