All vulnerabilities
CVE-2026-106461GHSA-7hfw-grcm-cqm6

@backstage/plugin-scaffolder-backend: Backstage: Incorrect authorization in scaffolder task listing

backstage @backstage/plugin-scaffolder-backendnpmLibraries & packages
Open in ThreatlineRecord JSON
CVSS
4.3Medium
ExploitationNo known exploitationNot in CISA KEV, which does not prove it is unexploitedCISA KEV
Exploit odds (EPSS)0.19%Chance of exploitation activity in the next 30 days, higher than 8% of CVEs. Scored 23 Oct 2026FIRST EPSS
Fixed in4.1.0Fixed versionGitHub
Published6 Oct 2026Updated 7 Oct 2026CVE List

What fixes it

  • 4.1.0@backstage/plugin-scaffolder-backend, npmGitHubnpm install @backstage/plugin-scaffolder-backend@4.1.0

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 internal user may be able to view metadata for scaffolder tasks outside the visibility intended by a deployment's permission policy. Stored task secrets are not included in the affected response, and no integrity or availability impact was identified.

Patches

Patched in @backstage/plugin-scaffolder-backend version 4.1.0

Workarounds

  • Restrict the scaffolder task-list endpoint at the ingress or authenticating proxy to users who are permitted to view all tasks.
  • Avoid placing sensitive values in template input parameters until the patched package is deployed.

Text from GitHub Advisory Database

Affected versions 4

  • @backstage/plugin-scaffolder-backend, npm< 4.1.0GitHub
  • backstageaffected: < 1.54.6CVE List
  • plugin-scaffolder-backendaffected: < 4.1.0CVE List
  • @backstage/plugin-scaffolder-backend, npmfrom first release, fixed in 4.1.0OSV

References 5