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CVE-2026-106503

8.1 high SSVC exploitation: none Analyzed
NVD · CVE.org

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 scaffolder action input authorization bypass. An authenticated user with access to affected Scaffolder templates could bypass configured action restrictions. Depending on integration credentials, this could grant unauthorized access to repositories and related source-control resources. This issue is fixed in versions 3.3.1, 3.4.1, 4.0.3 and 4.1.0.

Fix

Patch, vendor advisory and mitigation references on NVD 7

Every line above is quoted from NVD, CISA, Microsoft, the vendor's own advisory or DISA; nothing is generated.

Change history 1

  1. First seenCVSS 8.1 · linuxfoundationNVD modified 2026-10-13 14:37

Affected (CPE criteria) 2

  • cpe:2.3:a:linuxfoundation:backstage\/plugin-scaffolder-backend:*:*:*:*:*:*:*:*
  • cpe:2.3:a:linuxfoundation:backstage:*:*:*:*:*:*:*:*

References 7