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CVE-2026-106501GHSA-G2V8-7JHW-PP8P

Backstage: Sensitive information exposure in Scaffolder

Published
Last modified
published
Not listed in CISA KEV
Fix
Fixed in 1.49.6, 1.50.5, 1.54.6, 3.3.1, 3.4.1, and 2 more
None on Exploit-DB, Metasploit or GitHub
  • Exploitation: none
  • Automatable: no
  • Technical impact: total

Summary

Backstage is an open framework for building developer portals. Prior to 3.3.1, 3.4.1, 4.0.3 and 4.1.0, the @backstage/plugin-scaffolder-backend package is affected by sensitive information exposure in scaffolder. An authenticated Backstage user who can read another user's Scaffolder task may receive internal execution data. In deployments where that data contains credentials for an external service, this may permit disclosure and unauthorized changes in that external service. This issue is fixed in versions 3.3.1, 3.4.1, 4.0.3 and 4.1.0.

Timeline

  1. CVE published
  2. CISA SSVC assessment

    Exploitation: none · Automatable: no · Technical impact: total

  3. Record last updated

Affected versions

  • backstage backstage

    fixed in 1.49.6; From 1.50.0-next.0 · fixed in 1.50.5; From 1.51.0-next.0 · fixed in 1.54.6

  • @backstage plugin-scaffolder-backend

    fixed in 3.3.1; From 3.4.0 · fixed in 3.4.1; From 4.0.0 · fixed in 4.0.3; From 4.0.4 · fixed in 4.1.0

  • @backstage/plugin-scaffolder-backendnpm

    fixed in 3.3.1

  • @backstage/plugin-scaffolder-backendnpm

    From 3.4.0 · fixed in 3.4.1

  • @backstage/plugin-scaffolder-backendnpm

    From 4.0.0 · fixed in 4.0.3

  • @backstage/plugin-scaffolder-backendnpm

    From 4.0.4 · fixed in 4.1.0

References 7

GitHub · backstage/backstage