Description
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.
References7
- github.com/THU-MAIC/OpenMAIC
- github.com/THU-MAIC/OpenMAIC/blob/v1.0.0/app/api/generate/image…
- github.com/THU-MAIC/OpenMAIC/blob/v1.0.0/middleware.ts#L60-L63
- github.com/THU-MAIC/OpenMAIC/releases/tag/v1.0.1
- github.com/THU-MAIC/OpenMAIC/security/advisories/GHSA-9m7h-vh2h…
- www.vulncheck.com/advisories/openmaic-before-1.0.1-ssrf-via-env…
- github.com/THU-MAIC/OpenMAIC/security/advisories/GHSA-9m7h-vh2h…
Metrics
- CVSS 3.1
-
7.5
HIGH
Score source: CNA
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:C/C:H/I:L/A:N - CVSS 4.0
-
9.0
CRITICAL
Score source: CNA
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/E:X/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 — exploit probability
- 0% percentile: 36 · as of 3 November 2026
- CWE
- CWE-306CWE-918
Could this be exploited in your environment?
A patch closes the known hole. A penetration test shows what an attacker can still reach — with proof.