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.
Published: 2025-08-15
Score: 2.6 Low
EPSS: < 1% Very Low
KEV: No
Impact: n/a
Action: n/a
AI Analysis

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Remediation

No vendor fix or workaround currently provided.

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Tracking

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Advisories
Source ID Title
EUVD EUVD EUVD-2025-25046 Template Secret leakage in logs in Scaffolder when using `fetch:template`
Github GHSA Github GHSA GHSA-3x3q-ghcp-whf7 Template Secret leakage in logs in Scaffolder when using `fetch:template`
History

Sat, 16 Aug 2025 21:45:00 +0000

Type Values Removed Values Added
First Time appeared Backstage
Backstage backstage
Vendors & Products Backstage
Backstage backstage

Sat, 16 Aug 2025 00:15:00 +0000

Type Values Removed Values Added
References
Metrics threat_severity

None

threat_severity

Low


Fri, 15 Aug 2025 18:15:00 +0000

Type Values Removed Values Added
Metrics ssvc

{'options': {'Automatable': 'no', 'Exploitation': 'none', 'Technical Impact': 'partial'}, 'version': '2.0.3'}


Fri, 15 Aug 2025 17:30:00 +0000

Type Values Removed Values Added
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.
Title @backstage/plugin-scaffolder-backend Template Secret Leakage in Logs in Scaffolder When Using `fetch:template`
Weaknesses CWE-532
References
Metrics cvssV3_1

{'score': 2.6, 'vector': 'CVSS:3.1/AV:N/AC:H/PR:H/UI:R/S:C/C:L/I:N/A:N'}


Subscriptions

Backstage Backstage
cve-icon MITRE

Status: PUBLISHED

Assigner: GitHub_M

Published:

Updated: 2025-08-15T17:49:24.677Z

Reserved: 2025-08-12T16:15:30.236Z

Link: CVE-2025-55285

cve-icon Vulnrichment

Updated: 2025-08-15T17:49:19.543Z

cve-icon NVD

Status : Deferred

Published: 2025-08-15T18:15:27.943

Modified: 2026-04-15T00:35:42.020

Link: CVE-2025-55285

cve-icon Redhat

Severity : Low

Publid Date: 2025-08-15T17:10:26Z

Links: CVE-2025-55285 - Bugzilla

cve-icon OpenCVE Enrichment

Updated: 2025-08-16T21:40:38Z

Weaknesses