@backstage/plugin-catalog-backend Prototype Pollution vulnerability
Impact
A malicious actor with authenticated access to a Backstage instance with the catalog backend plugin installed is able to interrupt the service using a specially crafted query to the catalog API.
Patches
This has been fixed in the 1.26.0 release of the @backstage/plugin-catalog-backend package.
References
If you have any questions or comments about this advisory:
Open an issue in the Backstage repository Visit our Discord, linked to in Backstage README
Affected software
Click a technology to see all vulnerabilities affecting it.
| Platform | Package | Vulnerable versions | Fixed in |
|---|---|---|---|
| npm package | @backstage/plugin-catalog-backend | < 1.26.0 | 1.26.0 |
References
- CVSS vector
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H- Weakness (CWE)
CWE-1321- Platform
- npm
- Package
@backstage/plugin-catalog-backend- Disclosed
- 17.09.2024
- Updated
- 11.10.2026 10:22
Sources and licenses
OSV / GitHub Advisory Database - GHSA-3x3f-jcp3-g22j - CC BY 4.0
Vulnerability history: @backstage/plugin-catalog-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
- 4
- First → latest
- 02.2023 10.2026
- Without a fix
- 0
- Exploited in attacks
- 0
Severity breakdown
- High 2
- Medium 1
- Low 1
Disclosures per year
- 2023: 1
- 2024: 1
- 2025: 0
- 2026: 2
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@backstage/plugin-catalog-backend Prototype Pollution vulnerability this entry
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