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OpenAdvisories
Low · 2.6 CVE-2025-55285 EUVD-2025-25046GHSA-3x3q-ghcp-whf7

@backstage/plugin-scaffolder-backend Template Secret Leakage in Logs in Scaffolder When Using `fetch:template`

Published Aug 15, 2025 · Updated Aug 15, 2025 · Assigned by GitHub_M

Description

@backstage/plugin-scaffolder-backend is the backend for the default Backstage software templates. Prior to version 2.1.1, duplicate logging of the input values in the fetch:template action in the Scaffolder meant that some of the secrets were not properly redacted. If ${{ secrets.x }} is not passed through to fetch:template there is no impact. This issue has been resolved in 2.1.1 of the scaffolder-backend plugin. A workaround for this issue involves Template Authors removing the use of ${{ secrets }} being used as an argument to fetch:template.

Affected products

VendorProductAffectedFixed
backstage backstage < 2.1.1 —

Affected packages

EcosystemPackageAffectedFixedRecord
npm @backstage/plugin-scaffolder-backend < 2.1.1 2.1.1 GHSA-3x3q-ghcp-whf7

References