{"id":"CVE-2026-106499","title":"Backstage is an open framework for building developer portals","summary":"Backstage is an open framework for building developer portals. Prior to 4.1.0, the @backstage/plugin-scaffolder-backend package could expose secret-derived values in Scaffolder task logs. Deployments that configure sensitive scaffolder.d…","severity":"medium","cvss":4.9,"cvssVector":"CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:N/A:N","cwe":["CWE-532"],"vendor":"backstage","product":"backstage","affected":["backstage < 1.54.6","plugin-scaffolder-backend < 4.1.0"],"published":"2026-10-06","updated":"2026-10-06","sourceUpdated":"2026-10-06T22:17:04.907","source":"NVD","sourceUrl":"https://nvd.nist.gov/vuln/detail/CVE-2026-106499","references":[{"url":"https://github.com/backstage/backstage/commit/dc30fae2d96cb1606d36cc40b242f9b9e539bd70","label":"security-advisories@github.com"},{"url":"https://github.com/backstage/backstage/releases/tag/v1.54.6","label":"security-advisories@github.com"},{"url":"https://github.com/backstage/backstage/security/advisories/GHSA-mfvq-x7vr-rgqg","label":"security-advisories@github.com"}],"tags":["nvd","cve.org"],"ingestedAt":"2026-10-06T22:23:15.966Z","slug":"CVE-2026-106499","body":"## Overview\n\nBackstage is an open framework for building developer portals. Prior to 4.1.0, the @backstage/plugin-scaffolder-backend package could expose secret-derived values in Scaffolder task logs. Deployments 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 and exposed to users who can access the resulting task logs. This issue is fixed in version 4.1.0.\n\n## Remediation\n\nRefer to the linked advisories for vendor-supplied fixes and affected version ranges.","depth":"sunlit","depthScore":27,"depthScoreParts":{"impact":27,"likelihood":0,"exploitation":0,"ransomware":0},"changes":[]}