https://vulnerability.circl.lu/rss/recent/all/10 Most recent entries from all 2026-10-07T21:42:24.241776+00:00 Vulnerability-Lookup info@circl.lu python-feedgen Contains only the most 10 recent entries. https://vulnerability.circl.lu/vuln/fkie_cve-2026-106500 fkie_cve-2026-106500 2026-10-07T21:42:24.243871+00:00

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.

 https://vulnerability.circl.lu/vuln/ghsa-xvgh-hmx8-9xxf GHSA-xvgh-hmx8-9xxf — Backstage: Improper task state validation in Scaffolder backend 2026-10-07T21:42:24.243981+00:00

Affected: npm: @backstage/plugin-scaffolder-backend

### Impact

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.

### Patches

Patched in `@backstage/plugin-scaffolder-backend` version `4.1.0`

### Workarounds

- Restrict Scaffolder task creation and task-read permissions to trusted users through the permission policy. - Limit who can register or modify templates and which Scaffolder actions may execute. - Run backend application files read-only outside a dedicated, least-privilege Scaffolder working directory.

### References

- [Authorizing Scaffolder tasks, parameters, steps, and actions](https://backstage.io/docs/features/software-templates/authorizing-scaffolder-template-details/)