CVE-2026-106458 · GHSA-c36c-cf6r-ghgj
Backstage: Inconsistent repository filtering in Bitbucket Server catalog event updates
- Risk score
- 48/100
- CVSS
- 6.5 v3.1
- Exploit chance (30 days)
- 0.3%
- Published
- 6 Oct 2026
Open in the live forecast Today's forecast
What to know
- What it is
- Backstage is an open framework for building developer portals. From 0.4.0 until 0.5.15, the @backstage/plugin-catalog-backend-module-bitbucket-server package is affected by inconsistent repository filtering in bitbucket server catalog event updates. Deployments using event-driven updates in the Bitbucket Server catalo…
- Affected
- @backstage/plugin-catalog-backend-module-bitbucket-server (npm) >= 0.4.0, < 0.5.15
- Fix
- Upgrade @backstage/plugin-catalog-backend-module-bitbucket-server to 0.5.15 or later.
- Exploitation
- No known exploitation
Why it is Yellow
- CVSS 6.5 medium
- On your watchlist: npm
Affected packages
| Package | Ecosystem | Vulnerable | Fixed in |
|---|---|---|---|
| @backstage/plugin-catalog-backend-module-bitbucket-server | npm | >= 0.4.0, < 0.5.15 | 0.5.15 |
References
- https://github.com/advisories/GHSA-c36c-cf6r-ghgj
- https://github.com/backstage/backstage/security/advisories/GHSA-c36c-cf6r-ghgj
- https://nvd.nist.gov/vuln/detail/CVE-2026-106458
- https://github.com/backstage/backstage/commit/989db63b6f87c8fc04d440f296ad89e10c79b363
- https://github.com/backstage/backstage/releases/tag/v1.55.0
- https://github.com/advisories/GHSA-c36c-cf6r-ghgj
Original description
Backstage is an open framework for building developer portals. From 0.4.0 until 0.5.15, the @backstage/plugin-catalog-backend-module-bitbucket-server package is affected by inconsistent repository filtering in bitbucket server catalog event updates. Deployments using event-driven updates in the Bitbucket Server catalog provider may ingest catalog locations from repositories that are excluded by the provider's configured project, repository, or archived-repository filters. An authenticated Bitbucket Server user who can push to a filtered-out repository that remains readable by the configured Backstage integration can trigger a legitimate repository event. The affected event path may then add a Location for that repository even though scheduled discovery excludes it. This issue is fixed in version 0.5.15.
Last activity 6 Oct 2026. Patch Forecast updates every hour.