https://vulnerability.circl.lu/rss/recent/all/10 Most recent entries from all 2026-10-08T17:34:42.455465+00:00 Vulnerability-Lookup info@circl.lu python-feedgen Contains only the most 10 recent entries. https://vulnerability.circl.lu/vuln/fkie_cve-2026-106504 fkie_cve-2026-106504 2026-10-08T17:34:42.457623+00:00

Backstage is an open framework for building developer portals. Prior to 4.1.0, the @backstage/plugin-scaffolder-backend package is affected by sensitive information exposure in scaffolder task logs. An authenticated user who can create and read scaffolder tasks may be able to observe sensitive values in task logs in deployments with restrictive action permissions and affected templates. Exploitation requires a denied action whose input contains such a value. This issue is fixed in version 4.1.0.

 https://vulnerability.circl.lu/vuln/ghsa-4xvq-3m68-h444 GHSA-4xvq-3m68-h444 — Backstage has sensitive information exposure in scaffolder task logs 2026-10-08T17:34:42.457720+00:00

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

### Impact

An authenticated user who can create and read scaffolder tasks may be able to observe sensitive values in task logs in deployments with restrictive action permissions and affected templates. Exploitation requires a denied action whose input contains such a value.

### Patches

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

### Workarounds

- Restrict scaffolder task creation and task-log reading to trusted users. - Avoid placing centrally managed sensitive values in inputs to actions that may be denied until upgrading.

### References

- [Backstage threat model](https://backstage.io/docs/overview/threat-model/) - [Backstage permissions overview](https://backstage.io/docs/permissions/overview/)