Backstage: Improper repository path validation in a Scaffolder backend module
Impact
An authenticated user who can execute an affected template and control its repository file location may cause generated content to be written outside the task workspace, within locations writable by the Backstage backend process.
Patches
Patched in @backstage/plugin-scaffolder-backend-module-confluence-to-markdown version 0.3.25
Workarounds
- Restrict execution of templates using the affected action to trusted users.
- Remove or disable the affected action 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-module-confluence-to-markdown | < 0.3.25 | 0.3.25 |
References
- https://github.com/backstage/backstage/security/advisories/GHSA-2cmg-v53w-8xfp
- https://nvd.nist.gov/vuln/detail/CVE-2026-106560
- https://github.com/backstage/backstage/commit/5f0000c1d0af05571e357926b3fa33a453337ff0
- 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:N/I:H/A:L- Weakness (CWE)
CWE-22- Platform
- npm
- Package
@backstage/plugin-scaffolder-backend-module-confluence-to-markdown- Disclosed
- 07.10.2026
- Updated
- 11.10.2026 10:22
Sources and licenses
OSV / GitHub Advisory Database - GHSA-2cmg-v53w-8xfp - CC BY 4.0
Vulnerability history: @backstage/plugin-scaffolder-backend-module-confluence-to-markdown
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
- 2
- First → latest
- 10.2026 10.2026
- Without a fix
- 0
- Exploited in attacks
- 0
Severity breakdown
- High 1
- Medium 1
Disclosures per year
- 2026: 2
-
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