Backstage: Incorrect authorization in scaffolder task listing
Impact
An authenticated internal user may be able to view metadata for scaffolder tasks outside the visibility intended by a deployment's permission policy. Stored task secrets are not included in the affected response, and no integrity or availability impact was identified.
Patches
Patched in @backstage/plugin-scaffolder-backend version 4.1.0
Workarounds
- Restrict the scaffolder task-list endpoint at the ingress or authenticating proxy to users who are permitted to view all tasks.
- Avoid placing sensitive values in template input parameters until the patched package is deployed.
Affected software
Click a technology to see all vulnerabilities affecting it.
| Platform | Package | Vulnerable versions | Fixed in |
|---|---|---|---|
| npm package | @backstage/plugin-scaffolder-backend | < 4.1.0 | 4.1.0 |
References
- https://github.com/backstage/backstage/security/advisories/GHSA-7hfw-grcm-cqm6
- https://nvd.nist.gov/vuln/detail/CVE-2026-106461
- https://github.com/backstage/backstage/commit/0253c50673f2832b0b1e9f73348186434e7bd09e
- https://github.com/backstage/backstage
- https://github.com/backstage/backstage/releases/tag/v1.54.6
- CVSS vector
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N- Weakness (CWE)
CWE-863- Platform
- npm
- Package
@backstage/plugin-scaffolder-backend- Disclosed
- 07.10.2026
- Updated
- 11.10.2026 10:22
Sources and licenses
OSV / GitHub Advisory Database - GHSA-7hfw-grcm-cqm6 - CC BY 4.0
Vulnerability history: @backstage/plugin-scaffolder-backend
All published vulnerabilities of this package (npm package), newest first. Shows whether this is a one-off slip or a package that needs watching.
- Total entries
- 17
- First → latest
- 10.2021 10.2026
- Without a fix
- 0
- Exploited in attacks
- 0
Severity breakdown
- Critical 1
- High 6
- Medium 8
- Low 2
Disclosures per year
- 2021: 3
- 2022: 0
- 2023: 1
- 2024: 0
- 2025: 1
- 2026: 12
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