Path traversal for local publishers in TechDocs backend
Impact
A malicious actor with the ability to register entities in the Software Catalog is able to write files to arbitrary paths on the techdocs backend host instance when techdocs.publisher.type is set to local.
This vulnerability is mitigated by the fact that the Software Catalog must be configured with non-standard field format validators and/or non-standard entity policies.
Patches
Those affected are advised to upgrade to @backstage/plugin-techdocs-node version 1.1.2 or higher.
Workarounds
If patching or upgrading is not possible, it would be sufficient to update any custom Catalog field format validators and/or custom entity policies to disallow entity names, kinds, and namespaces containing ..
For more information
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Affected software
Click a technology to see all vulnerabilities affecting it.
| Platform | Package | Vulnerable versions | Fixed in |
|---|---|---|---|
| npm package | @backstage/plugin-techdocs-node | < 1.1.2 | 1.1.2 |
| npm package | @backstage/techdocs-common | < 0.11.16 | 0.11.16 |
References
- Weakness (CWE)
-- Platform
- npm
- Package
@backstage/plugin-techdocs-node, @backstage/techdocs-common- Disclosed
- 17.06.2022
- Updated
- 11.10.2026 10:22
Sources and licenses
OSV / GitHub Advisory Database - GHSA-4jqc-jvh2-pxg9 - CC BY 4.0
Vulnerability history: @backstage/plugin-techdocs-node
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
- 11
- First → latest
- 06.2022 10.2026
- Without a fix
- 0
- Exploited in attacks
- 0
Severity breakdown
- High 8
- Medium 3
Disclosures per year
- 2022: 1
- 2023: 0
- 2024: 0
- 2025: 0
- 2026: 10
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Path traversal for local publishers in TechDocs backend this entry
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