All vulnerabilities
CVE-2026-106559GHSA-75qf-886x-5xf2

Backstage: Improper input validation in Confluence to Markdown scaffolder module

backstage @backstage/plugin-scaffolder-backend-module-confluence-to-markdownnpmApplications & CMS
Open in ThreatlineRecord JSON
CVSS
6.3Medium
ExploitationNo known exploitationNot in CISA KEV, which does not prove it is unexploitedCISA KEV
Exploit odds (EPSS)0.33%Chance of exploitation activity in the next 30 days, higher than 25% 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

Insufficient input validation in the Confluence to Markdown scaffolder module could allow an attacker to influence file write operations during template execution. Exploitation requires a Backstage user to run a template that processes attacker-influenced Confluence content.

Patches

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

Workarounds

If unable to update immediately:

  • Restrict Confluence edit access to trusted users.
  • Review Confluence page content before running scaffolder templates against untrusted pages.

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