Riskcovery

CVE-2026-106462

Backstage: Scaffolder credential handling may allow unintended GitHub authentication fallback

State
Published
Severity
6.4 Medium
Published
Oct 6, 2026
Updated
Oct 7, 2026
Reserved
Oct 6, 2026

Read the record on cve.org

Description

Backstage is an open framework for building developer portals. Prior to 1.54.6, scaffolder source-control actions may not consistently enforce intended credential boundaries. An authenticated user could cause an affected action to fall back to broader integration credentials and perform operations with more access than intended. This issue is fixed in 1.54.6 when operators also enable scaffolder.requireScmUserCredentials after upgrading.

Scores

CVSSScoreVectorSource
3.16.4 MediumCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:L/I:L/A:NGitHub_M

Weaknesses

  • CWE-441 Unintended Proxy or Intermediary ('Confused Deputy')
  • CWE-863 Incorrect Authorization

Affected Products

ProductVersions
backstagebackstage
  • < 1.54.6Affected
plugin-scaffolder-backend@backstage
  • < 4.1.0Affected
plugin-scaffolder-backend-module-azure@backstage
  • < 0.2.25Affected
plugin-scaffolder-backend-module-bitbucket-cloud@backstage
  • < 0.3.10Affected
plugin-scaffolder-backend-module-bitbucket-server@backstage
  • < 0.2.25Affected
plugin-scaffolder-backend-module-github@backstage
  • < 0.9.13Affected
plugin-scaffolder-backend-module-gitlab@backstage
  • < 0.11.10Affected

References

Every record here comes from the CVE Program’s CVE List. © 1999–2026 The MITRE Corporation. CVE is a registered trademark of The MITRE Corporation. The records are reproduced under the CVE Program terms of use.