Detections
Analytics
CVE-2026-106500
high
Description
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 improper task state validation in scaffolder backend. An authenticated user with permission to create and access Scaffolder tasks may, under specific timing and deployment conditions, affect files accessible to the Backstage backend. If backend application files are writable, the confidentiality, integrity, and availability of the backend may be compromised. This issue is fixed in versions 3.3.1, 3.4.1, 4.0.3 and 4.1.0.
References
https://github.com/backstage/backstage/security/advisories/GHSA-xvgh-hmx8-9xxf
https://github.com/backstage/backstage/releases/tag/v1.54.6
https://github.com/backstage/backstage/releases/tag/v1.50.5
https://github.com/backstage/backstage/releases/tag/v1.49.6
https://github.com/backstage/backstage/commit/9e86c95a1a3ddfd54db03731cd8678aa63495175
https://github.com/backstage/backstage/commit/56be299dd3ef6706e13e76ea2f8a9b0dd0b6413d
https://github.com/backstage/backstage/commit/0d24f1b8701f3dde6cd597f81997c1ea873a43ae