medium5.3
CVE-2026-106502
Backstage may expose sensitive information in Scaffolder task failure events
Impact
Backstage is an open framework for building developer portals. Prior to 4.1.0, the @backstage/plugin-scaffolder-backend package could expose sensitive information in Scaffolder task failure events. Under specific template and failure conditions, an authenticated user may retrieve backend-managed credentials used during task execution from affected task events. This issue is fixed in version 4.1.0.
Affected packages
| Ecosystem | Package | Affected | Fixed in |
|---|---|---|---|
| npm | @backstage/plugin-scaffolder-backend | < 4.1.0 | 4.1.0 |
Affected products
| Vendor | Product | Affected versions |
|---|---|---|
| Linuxfoundation | Backstage\/Plugin-Scaffolder-Backend | before 4.1.0 |
| Linuxfoundation | Backstage | before 1.54.6 |
Weakness classification
References
- NVD record
- CVE.org record
- GitHub advisory
- https://github.com/advisories/GHSA-95p4-vv4g-jxxm
- https://github.com/backstage/backstage/security/advisories/GHSA-95p4-vv4g-jxxm
- https://nvd.nist.gov/vuln/detail/CVE-2026-106502
- https://github.com/backstage/backstage/commit/3f1e869708f002fb9838624b7379deb251691b47
- https://github.com/backstage/backstage/releases/tag/v1.54.6