HIGHVulnerability
Verified
Global

NVD HIGH: CVE-2026-106509 — Backstage is an open framework for building developer portals. Prior to 1.14.6, ...

·Source: NIST NVD

Updated:

Executive Summary

Backstage is an open framework for building developer portals. Prior to 1.14.6, the @backstage/plugin-techdocs-node package is affected by improper validation of mkdocs theme configuration in techdocs. When TechDocs is configured to build documentation locally or in a container, a user with write access to a registered repository can include configuration values in mkdocs.yml that cause arbitrary

Analysis

Backstage is an open framework for building developer portals. Prior to 1.14.6, the @backstage/plugin-techdocs-node package is affected by improper validation of mkdocs theme configuration in techdocs. When TechDocs is configured to build documentation locally or in a container, a user with write access to a registered repository can include configuration values in mkdocs.yml that cause arbitrary code execution during the documentation build process. This issue is fixed in versions 1.14.6 and 1.15.4. CVSS Score: 7.7. Published: 2026-10-06T22:17:06.463.

Indicators of Compromise (1)

CVE (1)
CVE-2026-106509
NVDMITRE CVE
Source Attribution

Originally published by NIST NVD on Oct 6, 2026. Verified by: NIST.

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