Script injection
Impact
A malicious internal actor is able to upload documentation content with malicious scripts. These scripts would normally be sanitized by the TechDocs frontend, but by tricking a user to visit the content via the TechDocs API, the content sanitazion will be bypassed. If the TechDocs API is hosted on the same origin as the Backstage app or other backend plugins, this may give access to sensitive data.
The ability to upload malicious content may be limited by internal code review processes, unless the chosen TechDocs deployment method is to use an object store and the actor has access to upload files directly to that store.
Patches
The vulnerability is patched in the 0.6.4 release of @backstage/techdocs-common.
For more information
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- Open an issue in the Backstage repository
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Affected software
Click a technology to see all vulnerabilities affecting it.
| Platform | Package | Vulnerable versions | Fixed in |
|---|---|---|---|
| npm package | @backstage/techdocs-common | < 0.6.4 | 0.6.4 |
References
- CVSS vector
CVSS:3.1/AV:N/AC:L/PR:H/UI:R/S:U/C:H/I:H/A:H- Weakness (CWE)
CWE-434, CWE-77- Platform
- npm
- Package
@backstage/techdocs-common- Disclosed
- 04.06.2021
- Updated
- 11.10.2026 10:22
Sources and licenses
OSV / GitHub Advisory Database - GHSA-pwhf-39xg-4rxw - CC BY 4.0
Vulnerability history: @backstage/techdocs-common
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
- 3
- First → latest
- 06.2021 06.2022
- Without a fix
- 0
- Exploited in attacks
- 0
Severity breakdown
- Medium 3
Disclosures per year
- 2021: 2
- 2022: 1
- 2023: 0
- 2024: 0
- 2025: 0
- 2026: 0
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Script injection this entry
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