Backstage has improper authorization in GitLab organizational user ingestion
Impact
Deployments that enable GitLab organization event ingestion and rely on scoped catalog users as an access boundary may admit an unintended catalog identity. Depending on sign-in and permission configuration, this may allow unauthorized access with the permissions of a standard authenticated user.
Patches
- Upgrade
@backstage/plugin-catalog-backend-module-gitlabto version0.8.7.
Workarounds
- Disable event-driven GitLab organization ingestion and rely on scheduled discovery until upgrading.
- Enforce organization membership independently at the authenticating proxy or sign-in resolver.
Affected software
Click a technology to see all vulnerabilities affecting it.
| Platform | Package | Vulnerable versions | Fixed in |
|---|---|---|---|
| npm package | @backstage/plugin-catalog-backend-module-gitlab | < 0.8.7 | 0.8.7 |
References
- https://github.com/backstage/backstage/security/advisories/GHSA-gp6m-x9vw-5c5x
- https://nvd.nist.gov/vuln/detail/CVE-2026-106463
- https://github.com/backstage/backstage/commit/c211b4b67d28efd2f4fac63e35e2ac515e305cb3
- 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:L/A:N- Weakness (CWE)
CWE-863- Platform
- npm
- Package
@backstage/plugin-catalog-backend-module-gitlab- Disclosed
- 07.10.2026
- Updated
- 11.10.2026 10:22
Sources and licenses
OSV / GitHub Advisory Database - GHSA-gp6m-x9vw-5c5x - CC BY 4.0
Vulnerability history: @backstage/plugin-catalog-backend-module-gitlab
All published vulnerabilities of this package (npm package), newest first. Shows whether this is a one-off slip or a package that needs watching.
This is the only known vulnerability of this package.
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