CVE-2026-86259CWE-306CWE-918ssrf

CVE-2026-86259

High · published September 6, 2026

CVSS v3.1
7.5
EPSS
—
In the wild
Unconfirmed
What it is

OpenMAIC before 1.0.1 skips server-side request forgery validation in non-production builds, allowing unauthenticated attackers to reach cloud instance metadata services. Attackers can supply arbitrary provider URLs via the x-base-url header or baseUrl parameter to access sensitive cloud credentials and metadata.

The record
Technical detail
CVSS v3.1
7.5 · HIGH
Vector
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:C/C:H/I:L/A:N
CVSS v4.0
9.0 · CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:H/VI:L/VA:N/SC:H/SI:N/SA:N
EPSS
Not scored
Weaknesses
CWE-306 · Missing Authentication for Critical Function; CWE-918 · Server-Side Request Forgery (SSRF)
Published
2026-09-06T17:17Z
References (6)
https://github.com/THU-MAIC/OpenMAIC · [email protected]https://github.com/THU-MAIC/OpenMAIC/blob/v1.0.0/app/api/generate/image/route.ts#L73-L78 · [email protected]https://github.com/THU-MAIC/OpenMAIC/blob/v1.0.0/middleware.ts#L60-L63 · [email protected]https://github.com/THU-MAIC/OpenMAIC/releases/tag/v1.0.1 · [email protected]https://github.com/THU-MAIC/OpenMAIC/security/advisories/GHSA-9m7h-vh2h-rc3w · [email protected]https://www.vulncheck.com/advisories/openmaic-before-1.0.1-ssrf-via-environment-gated-url-validation · [email protected]
Timeline
  • 06 SEP 12:37Z
    OpenMAIC before 1.0.1 SSRF via Environment-Gated URL Validation
    cvelistv5