{"id":"GHSA-mfvq-x7vr-rgqg","revision":"2e498a5bb67c4d76859fa6654658c43f","records":[{"revision":"2e498a5bb67c4d76859fa6654658c43f","observedAt":"2026-10-24T13:17:17.793+00:00","statement":{"source":"osv","id":"GHSA-mfvq-x7vr-rgqg","aliases":["CVE-2026-106499"],"title":"Backstage: Secret-derived values may be exposed in scaffolder task logs","description":"### Impact\n\nDeployments that configure sensitive `scaffolder.defaultEnvironment.secrets` and allow an attacker to create or modify Scaffolder templates are affected. A template author could cause secret-derived values used during template iteration to be persisted in task logs, exposing those values to users with access to the resulting task logs.\n\n### Patches\n\nPatched in `@backstage/plugin-scaffolder-backend` version `4.1.0`\n\n### Workarounds\n\n- Restrict permission to create or update Template entities to fully trusted parties, as recommended by the Backstage threat model.\n- If that restriction cannot be guaranteed, remove sensitive values from `scaffolder.defaultEnvironment.secrets` until a patched version is available.\n\nNo complete workaround is known that preserves both untrusted template authoring and access to sensitive default-environment secrets.","state":0,"publishedAt":"2026-10-07T17:59:14+00:00","modifiedAt":"2026-10-07T18:15:10.7880592+00:00","affected":[{"ecosystem":"npm","name":"@backstage/plugin-scaffolder-backend","ranges":[{"type":"SEMVER","events":[{"kind":"introduced","version":"0"},{"kind":"fixed","version":"4.1.0"}]}],"versions":[],"rawVersionEvidence":null}],"metrics":[{"system":"CVSS_V3","vector":"CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:N/A:N","score":null,"severity":null},{"system":"Publisher rating","vector":null,"score":null,"severity":"MODERATE"}],"references":["https://github.com/backstage/backstage/security/advisories/GHSA-mfvq-x7vr-rgqg","https://nvd.nist.gov/vuln/detail/CVE-2026-106499","https://github.com/backstage/backstage/commit/dc30fae2d96cb1606d36cc40b242f9b9e539bd70","https://github.com/backstage/backstage","https://github.com/backstage/backstage/releases/tag/v1.54.6"],"sourceUrl":"https://github.com/advisories/GHSA-mfvq-x7vr-rgqg","license":"GitHub Advisory Database · CC-BY-4.0","key":"osv:GHSA-mfvq-x7vr-rgqg","identifiers":["GHSA-mfvq-x7vr-rgqg","CVE-2026-106499"]},"retained":false,"historicalAffected":[]}],"coverage":[]}