Riskcovery

CVE-2026-106510

Backstage: Remote code execution via crafted markdown_extensions in TechDocs mkdocs.yml

State
Published
Severity
7.7 High
Published
Oct 7, 2026
Updated
Oct 7, 2026
Reserved
Oct 6, 2026

Read the record on cve.org

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.

Scores

CVSSScoreVectorSource
3.17.7 HighCVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:C/C:H/I:L/A:LGitHub_M

Weaknesses

  • CWE-183 Permissive List of Allowed Inputs
  • CWE-470 Use of Externally-Controlled Input to Select Classes or Code ('Unsafe Reflection')

Affected Products

ProductVersions
backstagebackstage
  • < 1.50.5Affected
  • >= 1.51.0-next.0, < 1.54.6Affected
plugin-techdocs-node@backstage
  • < 1.14.6Affected
  • >= 1.15.0, < 1.15.4Affected

References

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