All vulnerabilities
CVE-2026-106560GHSA-2cmg-v53w-8xfp

Backstage: Improper repository path validation in a Scaffolder backend module

backstage @backstage/plugin-scaffolder-backend-module-confluence-to-markdownnpmApplications & CMS
Open in ThreatlineRecord JSON
CVSS
7.1High
ExploitationNo known exploitationNot in CISA KEV, which does not prove it is unexploitedCISA KEV
Exploit odds (EPSS)0.31%Chance of exploitation activity in the next 30 days, higher than 23% of CVEs. Scored 23 Oct 2026FIRST EPSS
Fixed in0.3.25Fixed versionGitHub
Published7 Oct 2026Updated 7 Oct 2026CVE List

What fixes it

  • 0.3.25@backstage/plugin-scaffolder-backend-module-confluence-to-markdown, npmGitHubnpm install @backstage/plugin-scaffolder-backend-module-confluence-to-markdown@0.3.25

A fixed version on one release line is not the upgrade target for every line. Check your exact version and any vendor backports.

Description

Impact

An authenticated user who can execute an affected template and control its repository file location may cause generated content to be written outside the task workspace, within locations writable by the Backstage backend process.

Patches

Patched in @backstage/plugin-scaffolder-backend-module-confluence-to-markdown version 0.3.25

Workarounds

  • Restrict execution of templates using the affected action to trusted users.
  • Remove or disable the affected action until the patched package is deployed.

Text from GitHub Advisory Database

Affected versions 4

  • @backstage/plugin-scaffolder-backend-module-confluence-to-markdown, npm< 0.3.25GitHub
  • backstageaffected: < 1.54.6CVE List
  • plugin-scaffolder-backend-module-confluence-to-markdownaffected: < 0.3.25CVE List
  • @backstage/plugin-scaffolder-backend-module-confluence-to-markdown, npmfrom first release, fixed in 0.3.25OSV

References 5