All vulnerabilities
CVE-2026-106496GHSA-pcmq-25r3-5w9v

@backstage/plugin-catalog-backend: Backstage: Inconsistent enforcement of allowed location types during catalog processing

backstage @backstage/plugin-catalog-backendnpmLibraries & packages
Open in ThreatlineRecord JSON
CVSS
3.1Low
ExploitationNo known exploitationNot in CISA KEV, which does not prove it is unexploitedCISA KEV
Exploit odds (EPSS)0.24%Chance of exploitation activity in the next 30 days, higher than 14% of CVEs. Scored 23 Oct 2026FIRST EPSS
Fixed in3.9.1Fixed versionGitHub
Published6 Oct 2026Updated 7 Oct 2026CVE List

What fixes it

  • 3.9.1@backstage/plugin-catalog-backend, npmGitHubnpm install @backstage/plugin-catalog-backend@3.9.1

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

Under certain configurations, the catalog backend could process location types that were not intended to be allowed, potentially leading to unintended file access on the backend host.

Patches

Patched in @backstage/plugin-catalog-backend version 3.9.1

Workarounds

No practical workarounds are available. Upgrade to the patched version.

Text from GitHub Advisory Database

Affected versions 4

  • @backstage/plugin-catalog-backend, npm< 3.9.1GitHub
  • backstageaffected: < 1.54.6CVE List
  • plugin-catalog-backendaffected: < 3.9.1CVE List
  • @backstage/plugin-catalog-backend, npmfrom first release, fixed in 3.9.1OSV

References 5