{"id":"GHSA-3x3q-ghcp-whf7","summary":"Template Secret leakage in logs in Scaffolder when using `fetch:template`","details":"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.\n\n*   **Fix:** upgrade to `2.1.1`, which removes the duplicate log path and ensures secrets are redacted.\n*   **Mitigation:** avoid passing `{{ secrets }}` to `fetch:template` if upgrade is not possible.\n\n\u003e Open an issue in the [Backstage repository](https://github.com/backstage/backstage)\n\u003e\n\u003e Visit our Discord, linked to in [Backstage README](https://github.com/backstage/backstage)","aliases":["CVE-2025-55285"],"modified":"2025-09-26T17:19:17Z","published":"2025-08-15T18:43:16Z","database_specific":{"github_reviewed":true,"github_reviewed_at":"2025-08-15T18:43:16Z","nvd_published_at":"2025-08-15T18:15:27Z","cwe_ids":["CWE-532"],"severity":"LOW"},"references":[{"type":"WEB","url":"https://github.com/backstage/backstage/security/advisories/GHSA-3x3q-ghcp-whf7"},{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2025-55285"},{"type":"WEB","url":"https://github.com/backstage/backstage/commit/c371f6fe12371de31dca537510e6653e287cdc2e"},{"type":"PACKAGE","url":"https://github.com/backstage/backstage"}],"affected":[{"package":{"name":"@backstage/plugin-scaffolder-backend","ecosystem":"npm","purl":"pkg:npm/%40backstage/plugin-scaffolder-backend"},"ranges":[{"type":"SEMVER","events":[{"introduced":"0"},{"fixed":"2.1.1"}]}],"database_specific":{"last_known_affected_version_range":"\u003c= 2.1.0","source":"https://github.com/github/advisory-database/blob/main/advisories/github-reviewed/2025/08/GHSA-3x3q-ghcp-whf7/GHSA-3x3q-ghcp-whf7.json"}}],"schema_version":"1.9.0","severity":[{"type":"CVSS_V3","score":"CVSS:3.1/AV:N/AC:H/PR:H/UI:R/S:C/C:L/I:N/A:N"}]}