Backstage is an open framework for building developer portals. Prior to 4.1.0, the @backstage/plugin-scaffolder-backend package could expose secret-derived values in Scaffolder task logs. Deployments that configure sensitive scaffolder.defaultEnvironment.secrets and allow an attacker to create or modify Scaffolder templates are affected. A template author could cause secret-derived values used during template iteration to be persisted and exposed to users who can access the resulting task logs. This issue is fixed in version 4.1.0.
Fix
Patch, vendor advisory and mitigation references on NVD 3
- https://github.com/backstage/backstage/commit/dc30fae2d96cb1606d36cc40b242f9b9e539bd70 Patch
- https://github.com/backstage/backstage/releases/tag/v1.54.6 Patch, Release Notes
- https://github.com/backstage/backstage/security/advisories/GHSA-mfvq-x7vr-rgqg Mitigation, Vendor Advisory
Every line above is quoted from NVD, CISA, Microsoft, the vendor's own advisory or DISA; nothing is generated.
Change history 1
- First seenCVSS 4.9 · linuxfoundationNVD modified 2026-10-15 02:16
Affected (CPE criteria) 2
cpe:2.3:a:linuxfoundation:backstage\/plugin-scaffolder-backend:*:*:*:*:*:*:*:*cpe:2.3:a:linuxfoundation:backstage:*:*:*:*:*:*:*:*