Description
Backstage is an open framework for building developer portals. Prior to 1.14.6, the @backstage/plugin-techdocs-node package is affected by remote code execution via crafted markdown_extensions in techdocs mkdocs.yml. An authenticated user who can register catalog entities can provide a crafted mkdocs.yml causing arbitrary OS command execution on the TechDocs build host when the docs are built. This issue is fixed in versions 1.14.6 and 1.15.4.
Published: 2026-10-07
Score: 7.7 High
EPSS: n/a
KEV: No
AI Analysis

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Remediation

No vendor fix or workaround currently provided.

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Tracking

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Advisories
Source ID Title
Github GHSA Github GHSA GHSA-4488-j8vj-vqqv Backstage: Remote code execution via crafted markdown_extensions in TechDocs mkdocs.yml
History

Wed, 07 Oct 2026 18:30:00 +0000

Type Values Removed Values Added
Metrics ssvc

{'options': {'Automatable': 'no', 'Exploitation': 'none', 'Technical Impact': 'partial'}, 'version': '2.0.3'}


Wed, 07 Oct 2026 14:45:00 +0000

Type Values Removed Values Added
Description Backstage is an open framework for building developer portals. Prior to 1.14.6, the @backstage/plugin-techdocs-node package is affected by remote code execution via crafted markdown_extensions in techdocs mkdocs.yml. An authenticated user who can register catalog entities can provide a crafted mkdocs.yml causing arbitrary OS command execution on the TechDocs build host when the docs are built. This issue is fixed in versions 1.14.6 and 1.15.4.
Title Backstage: Remote code execution via crafted markdown_extensions in TechDocs mkdocs.yml
Weaknesses CWE-183
CWE-470
References
Metrics cvssV3_1

{'score': 7.7, 'vector': 'CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:C/C:H/I:L/A:L'}


Subscriptions

No data.

cve-icon MITRE

Status: PUBLISHED

Assigner: GitHub_M

Published:

Updated: 2026-10-07T17:15:43.410Z

Reserved: 2026-10-06T18:46:47.767Z

Link: CVE-2026-106510

cve-icon Vulnrichment

Updated: 2026-10-07T17:14:29.371Z

cve-icon NVD

Status : Awaiting Analysis

Published: 2026-10-07T15:17:12.430

Modified: 2026-10-07T18:17:16.660

Link: CVE-2026-106510

cve-icon Redhat

No data.

cve-icon OpenCVE Enrichment

Updated: 2026-10-07T15:30:17Z

Weaknesses
  • CWE-183

    Permissive List of Allowed Inputs

  • CWE-470

    Use of Externally-Controlled Input to Select Classes or Code ('Unsafe Reflection')