Dashboard / CVE-2026-12773

CVE-2026-12773

MEDIUM
MEDIUM Priority: 0.06 BB Relevance: 71/100
Published: 2026-06-21 Modified: 2026-10-25 First seen: 2026-10-29 Status: active

Attack Surface

Network Low Complexity No Auth No Interaction

CVSS Vector Breakdown

AV: Network
AC: Low
PR: None
UI: None
S: X
AT: None
VC: Low
VI: Low
VA: Low

Description

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.

Weakness Classification (2)

Affected Software (1)

VendorProductVersion
litellm litellm < 1.59.9

References & Advisories (8)

https://vuldb.com/cve/CVE-2026-12773
Third Party Advisory VDB Entry
https://vuldb.com/vuln/372515
Third Party Advisory VDB Entry
https://vuldb.com/vuln/372515/cti
Permissions Required VDB Entry
https://vuldb.com/submit/811282
Exploit Third Party Advisory VDB Entry

Bug Bounty Relevance

71 / 100
✓ Network accessible
✓ No authentication
✓ Low complexity
✓ No user interaction

CVSS Score

5.5 / 10.0 v4.0
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

EPSS — Exploitation Probability

1.02%
Raw Score 0.010170
Percentile 63.2%
Date 2026-10-29

EPSS Trend

2026-10-29
0.01017
2026-10-28
0.01017

Intelligence Sources

nvd ref →

External Links