GHSA-4xvq-3m68-h444

Backstage has sensitive information exposure in scaffolder task logs

At a glance

Published
Updated
CVE
CVE-2026-106504
CVSS_V3
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N

Description

### Impact An authenticated user who can create and read scaffolder tasks may be able to observe sensitive values in task logs in deployments with restrictive action permissions and affected templates. Exploitation requires a denied action whose input contains such a value. ### Patches Patched in `@backstage/plugin-scaffolder-backend` version `4.1.0` ### Workarounds - Restrict scaffolder task creation and task-log reading to trusted users. - Avoid placing centrally managed sensitive values in inputs to actions that may be denied until upgrading. ### References - [Backstage threat model](https://backstage.io/docs/overview/threat-model/) - [Backstage permissions overview](https://backstage.io/docs/permissions/overview/)

Affected packages

PackageVersions
npm · @backstage/plugin-scaffolder-backendintroduced 0, fixed 4.1.0

References

Sources

SourceLicence
OSV.devCC-BY 4.0 — GitHub Advisory Database