9.8

CVE-2026-12773

Exploit

BerriAI litellm MCP Proxy user_api_key_auth_mcp.py UserAPIKeyAuth improper authentication

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.
Daten sind bereitgestellt durch National Vulnerability Database (NVD)
Litellm ≫ Litellm Version < 1.59.9
Zu dieser CVE wurde keine Warnung gefunden.
EPSS Metriken
Typ Quelle Score Percentile
EPSS FIRST.org 0.61% 0.448
CVSS Metriken
Quelle Base Score Exploit Score Impact Score Vector String
NIST 9.8 3.9 5.9
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
cna@vuldb.com 5.5 0 0
CVSS:4.0/AV:N/AC:L/AT:N/PR:N/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
cna@vuldb.com 7.3 3.9 3.4
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:L
0b0ca135-0b70-47e7-9f44-1890c2a1c46c 7.3 3.9 3.4
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:L
cna@vuldb.com 7.5 10 6.4
AV:N/AC:L/Au:N/C:P/I:P/A:P
CWE-287 Improper Authentication

When an actor claims to have a given identity, the product does not prove or insufficiently proves that the claim is correct.

CWE-303 Incorrect Implementation of Authentication Algorithm

The requirements for the product dictate the use of an established authentication algorithm, but the implementation of the algorithm is incorrect.

https://vuldb.com/vuln/372515
Third Party Advisory
VDB Entry
https://vuldb.com/vuln/372515/cti
VDB Entry
Permissions Required
https://vuldb.com/submit/811282
Third Party Advisory
Exploit
VDB Entry
https://bugzilla.redhat.com/show_bug.cgi?id=2491112
https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-12773.json
https://gist.github.com/YLChen-007/3cfaad10a69d7a15e4d4d458cb53309e
Third Party Advisory
Exploit
https://vuldb.com/cve/CVE-2026-12773
Third Party Advisory
VDB Entry
https://access.redhat.com/security/cve/CVE-2026-12773