CVE-2026-86259: Server-Side Request Forgery (SSRF) in THU-MAIC OpenMAIC
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.
CVSS v4.0
Score 9.0critical
Affected software
THU-MAIC
OpenMAIC
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
OpenMAIC versions prior to 1.0.1 contain a SSRF vulnerability where server-side request forgery validation is bypassed in non-production builds. Attackers can exploit this by providing arbitrary provider URLs through the x-base-url header or baseUrl parameter, enabling them to reach cloud instance metadata services and potentially access sensitive cloud credentials and metadata.
Potential Impact
An unauthenticated attacker can exploit this vulnerability to access cloud instance metadata services, potentially exposing sensitive cloud credentials and metadata. This could lead to unauthorized access to cloud resources or further compromise of the cloud environment.
Mitigation Recommendations
A fix is available in OpenMAIC version 1.0.1. Users should upgrade to version 1.0.1 or later to remediate this vulnerability. Since this vulnerability occurs only in non-production builds, ensuring production builds are used and properly configured can also reduce risk.
Technical Details
- Data Version
- 5.2
- Assigner Short Name
- VulnCheck
- Date Reserved
- 2026-09-06T11:35:19.317Z
- Cvss Version
- 4.0
- State
- PUBLISHED
Threat ID: 6a9d621aacd9273b49c20980
Added to database: 09/06/2026, 12:52:42 UTC
Last enriched: 09/25/2026, 02:48:00 UTC
Last updated: 10/21/2026, 13:20:24 UTC
Views: 107
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