CVE-2025-55285

Low

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.

SeverityLow
CVSS2.6
Exploit probability—
Product@backstage/plugin-scaffolder-backend
PublishedAug 15, 2025
First seenAug 15, 2025
Weakness typeCWE-532CWE-532

How to fix

Update
  • @backstage/plugin-scaffolder-backend2.1.1 or later

Affected products

ProductAffected versionsFixed in
@backstage/plugin-scaffolder-backendnpmv < 2.1.12.1.1

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