GHSA-g2v8-7jhw-pp8p
Backstage: Sensitive information exposure in Scaffolder
Packages
| Ecosystem | Package | Affected | Fixed in |
|---|---|---|---|
| npm | @backstage/plugin-scaffolder-backend | < 3.3.1 | 3.3.1 |
| npm | @backstage/plugin-scaffolder-backend | >= 3.4.0, < 3.4.1 | 3.4.1 |
| npm | @backstage/plugin-scaffolder-backend | >= 4.0.0, < 4.0.3 | 4.0.3 |
| npm | @backstage/plugin-scaffolder-backend | >= 4.0.4, < 4.1.0 | 4.1.0 |
Details
As written in the advisory (Markdown source, shown as plain text).
### Impact
An authenticated Backstage user who can read another user's Scaffolder task may receive internal execution data. In deployments where that data contains credentials for an external service, this may permit disclosure and unauthorized changes in that external service.
### Patches
Patched in `@backstage/plugin-scaffolder-backend` version `4.1.0`
### Workarounds
- Configure `scaffolder.task.read` with the `isTaskOwner` condition so users can only read tasks they created.
- Restrict affected integrations and workflows to trusted operators until an upgrade is available.
References
External links from the advisory. They lead to third-party sites.
- https://github.com/backstage/backstage/security/advisories/GHSA-g2v8-7jhw-pp8p
- https://nvd.nist.gov/vuln/detail/CVE-2026-106501
- https://github.com/backstage/backstage/commit/66d2219edf0abe33ab7d0c1ced5d069d1e065be5
- https://github.com/backstage/backstage/commit/c19838870476a8e29144c84b1a5ac0654ec20fb5
- https://github.com/backstage/backstage/commit/e262d649981ff99bb01ca7077807ae3e25e85560
- https://github.com/backstage/backstage
- https://github.com/backstage/backstage/releases/tag/v1.49.6
- https://github.com/backstage/backstage/releases/tag/v1.50.5
- https://github.com/backstage/backstage/releases/tag/v1.54.6