CVE-2026-106501
9.6
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:N
Summary
Backstage is an open framework for building developer portals. Prior to 3.3.1, 3.4.1, 4.0.3 and 4.1.0, the @backstage/plugin-scaffolder-backend package is affected by sensitive information exposure in scaffolder. 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. This issue is fixed in versions 3.3.1, 3.4.1, 4.0.3 and 4.1.0.
Affected Software
| Vendor | Product | Version Range | Status |
|---|---|---|---|
| backstage | backstage | < 1.49.6 | affected |
| backstage | backstage | >= 1.50.0-next.0, < 1.50.5 | affected |
| backstage | backstage | >= 1.51.0-next.0, < 1.54.6 | affected |
| @backstage | plugin-scaffolder-backend | < 3.3.1 | affected |
| @backstage | plugin-scaffolder-backend | >= 3.4.0, < 3.4.1 | affected |
| @backstage | plugin-scaffolder-backend | >= 4.0.0, < 4.0.3 | affected |
| @backstage | plugin-scaffolder-backend | >= 4.0.4, < 4.1.0 | affected |
Weaknesses
- CWE-200: CWE-200: Exposure of Sensitive Information to an Unauthorized Actor
- CWE-201: CWE-201: Insertion of Sensitive Information Into Sent Data
References
- https://github.com/backstage/backstage/security/advisories/GHSA-g2v8-7jhw-pp8p
- 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/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
Feedback
Was this page helpful?
Glad to hear it! Please tell us how we can improve.
Sorry to hear that. Please tell us how we can improve.