Vulnerability DatabaseCVE-2026-86259
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CVE-2026-86259
Published:September 06, 2026
Updated:September 22, 2026
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.
Affected Packages
https://github.com/THU-MAIC/OpenMAIC.git (GITHUB):
Affected version(s) >=v0.1.0 <v1.0.1
Fix Suggestion:
Update to version v1.0.1
Related Resources (8)
https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/86xxx/CVE-2026-86259.json
https://github.com/THU-MAIC/OpenMAIC
https://nvd.nist.gov/vuln/detail/CVE-2026-86259
https://www.vulncheck.com/advisories/openmaic-before-1.0.1-ssrf-via-environment-gated-url-validation
https://github.com/THU-MAIC/OpenMAIC/releases/tag/v1.0.1
https://github.com/THU-MAIC/OpenMAIC/blob/v1.0.0/middleware.ts#L60-L63
https://github.com/THU-MAIC/OpenMAIC/security/advisories/GHSA-9m7h-vh2h-rc3w
https://github.com/THU-MAIC/OpenMAIC/blob/v1.0.0/app/api/generate/image/route.ts#L73-L78
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CVSS v4
Base Score:
9
Attack Vector
NETWORK
Attack Complexity
LOW
Attack Requirements
PRESENT
Privileges Required
NONE
User Interaction
NONE
Vulnerable System Confidentiality
HIGH
Vulnerable System Integrity
LOW
Vulnerable System Availability
NONE
Subsequent System Confidentiality
HIGH
Subsequent System Integrity
NONE
Subsequent System Availability
NONE
CVSS v3
Base Score:
7.5
Attack Vector
NETWORK
Attack Complexity
HIGH
Privileges Required
NONE
User Interaction
NONE
Scope
CHANGED
Confidentiality
HIGH
Integrity
LOW
Availability
NONE
Weakness Type (CWE)
Missing Authentication for Critical Function
CWE-306
Server-Side Request Forgery (SSRF)
CWE-918
EPSS
Base Score:
0.25