CVE-2025-55285
lowpriority · track · 0EPSS 0.002 · 15 %ileEUUSEPSS · scored 2026-10-27
@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.
cvss
Technical severity, 0–10. One row per scoring source.
base score 0–10 · higher = more severe · hover a vector to decode
ssvc
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weaknesses
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affected products (2)
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advisories (1)
Vendor and ecosystem advisories describing this.
- GHSA-3x3q-ghcp-whf7Template Secret leakage in logs in Scaffolder when using `fetch:template`2025-08-15ghsa · osvUS
A logging flaw in Backstage Scaffolder’s `fetch:template` action up to `@backstage/plugin-scaffolder-backend` **2.1.0** may write template secrets to logs. The action emitted a duplicate, pre-redaction copy of input parameters, so values provided via the `{{ secrets }}` bag could appear in local/server logs when the action ran. Exploitation requires use of the `secrets` argument and access to Scaffolder/build logs; integrity and availability are unaffected. * **Fix:** upgrade to `2.1.1`, which removes the duplicate log path and ensures secrets are redacted. * **Mitigation:** avoid passing `{{ secrets }}` to `fetch:template` if upgrade is not possible. > Open an issue in the [Backstage repository](https://github.com/backstage/backstage) > > Visit our Discord, linked to in [Backstage README](https://github.com/backstage/backstage)
also known as (3)
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sources
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references (8)
External citations — patches, advisories, analysis.
- https://github.com/backstage/backstage/commit/c371f6fe12371de31dca537510e6653e287cdc2ecnnvd
- https://github.com/backstage/backstage/releasesPatchcnnvd
- https://github.com/backstage/backstage/security/advisories/GHSA-3x3q-ghcp-whf7cnnvd
- https://nvd.nist.gov/vuln/detail/CVE-2025-55285cnnvd
- https://github.com/backstage/backstage/commit/c371f6fe12371de31dca537510e6653e287cdc2eenisa_euvd
- https://github.com/backstage/backstage/security/advisories/GHSA-3x3q-ghcp-whf7enisa_euvd
- https://github.com/backstage/backstage/commit/c371f6fe12371de31dca537510e6653e287cdc2envd
- https://github.com/backstage/backstage/security/advisories/GHSA-3x3q-ghcp-whf7nvd
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