Description
Backstage is an open framework for building developer portals. Prior to version 1.14.3, this is a configuration bypass vulnerability that enables arbitrary code execution. The @backstage/plugin-techdocs-node package uses an allowlist to filter dangerous MkDocs configuration keys during the documentation build process. A gap in this allowlist allows attackers to craft an mkdocs.yml that causes arbitrary Python code execution, completely bypassing TechDocs' security controls. This issue has been patched in version 1.14.3.
CVSS Metrics
- Vector
- CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:C/C:H/I:L/A:L
- Attack Vector
- network
- Complexity
- high
- Privileges
- low
- User Action
- none
- Scope
- changed
- Confidentiality
- high
- Integrity
- low
- Availability
- low
- Weaknesses
- CWE-74CWE-434CWE-434
Metadata
- Primary Vendor
- LINUXFOUNDATION
- Published
- 3/7/2026
- Last Modified
- 3/11/2026
- Source
- NIST NVD
- Note: Verify all details with official vendor sources before applying patches.
Affected Products
linuxfoundation : backstage_plugin-techdocs-node
AI-Powered Remediation
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