GHSA-mfvq-x7vr-rgqg
Backstage: Secret-derived values may be exposed in scaffolder task logs
At a glance
- Published
- Updated
- CVE
- CVE-2026-106499
- CVSS_V3
- CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:N/A:N
Description
### Impact Deployments that configure sensitive `scaffolder.defaultEnvironment.secrets` and allow an attacker to create or modify Scaffolder templates are affected. A template author could cause secret-derived values used during template iteration to be persisted in task logs, exposing those values to users with access to the resulting task logs. ### Patches Patched in `@backstage/plugin-scaffolder-backend` version `4.1.0` ### Workarounds - Restrict permission to create or update Template entities to fully trusted parties, as recommended by the Backstage threat model. - If that restriction cannot be guaranteed, remove sensitive values from `scaffolder.defaultEnvironment.secrets` until a patched version is available. No complete workaround is known that preserves both untrusted template authoring and access to sensitive default-environment secrets.
Affected packages
| Package | Versions |
|---|---|
| npm · @backstage/plugin-scaffolder-backend | introduced 0, fixed 4.1.0 |
References
- https://github.com/backstage/backstage/security/advisories/GHSA-mfvq-x7vr-rgqg WEB
- https://nvd.nist.gov/vuln/detail/CVE-2026-106499 ADVISORY
- https://github.com/backstage/backstage/commit/dc30fae2d96cb1606d36cc40b242f9b9e539bd70 WEB
- https://github.com/backstage/backstage PACKAGE
- https://github.com/backstage/backstage/releases/tag/v1.54.6 WEB
Sources
| Source | Licence |
|---|---|
| OSV.dev | CC-BY 4.0 — GitHub Advisory Database |