{"id":"CVE-2026-106501","title":"Backstage is an open framework for building developer portals","summary":"Backstage is an open framework for building developer portals. Prior to 3.3.1, 3.4.1, 4.0.3 and 4.1.0, the @backstage/plugin-scaffolder-backend package is affected by sensitive information exposure in scaffolder. An authenticated Backsta…","severity":"critical","cvss":9.6,"cvssVector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:N","cwe":["CWE-200","CWE-201"],"vendor":"linuxfoundation","product":"backstage/plugin-scaffolder-backend","affected":["backstage/plugin-scaffolder-backend < 3.3.1","backstage/plugin-scaffolder-backend >= 3.4.0, < 3.4.1","backstage/plugin-scaffolder-backend >= 4.0.0, < 4.0.3","backstage/plugin-scaffolder-backend >= 4.0.4, < 4.1.0","backstage < 1.49.6","backstage >= 1.50.0, < 1.50.5","backstage >= 1.51.0, < 1.54.6"],"patched":["backstage/plugin-scaffolder-backend 4.1.0","backstage 1.54.6"],"published":"2026-10-06","updated":"2026-10-13","sourceUpdated":"2026-10-13T14:38:15.587","source":"NVD","sourceUrl":"https://nvd.nist.gov/vuln/detail/CVE-2026-106501","references":[{"url":"https://github.com/backstage/backstage/commit/66d2219edf0abe33ab7d0c1ced5d069d1e065be5","label":"security-advisories@github.com"},{"url":"https://github.com/backstage/backstage/commit/c19838870476a8e29144c84b1a5ac0654ec20fb5","label":"security-advisories@github.com"},{"url":"https://github.com/backstage/backstage/commit/e262d649981ff99bb01ca7077807ae3e25e85560","label":"security-advisories@github.com"},{"url":"https://github.com/backstage/backstage/releases/tag/v1.49.6","label":"security-advisories@github.com"},{"url":"https://github.com/backstage/backstage/releases/tag/v1.50.5","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-g2v8-7jhw-pp8p","label":"security-advisories@github.com"},{"url":"https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-106501.json"},{"url":"https://access.redhat.com/security/cve/CVE-2026-106501"},{"url":"https://bugzilla.redhat.com/show_bug.cgi?id=2547222"},{"url":"https://www.cve.org/CVERecord?id=CVE-2026-106501"},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2026-106501"},{"url":"https://github.com/advisories/GHSA-g2v8-7jhw-pp8p"},{"url":"https://access.redhat.com/errata/RHSA-2026:86675"}],"tags":["nvd","cve.org","csaf","vex","red-hat","ghsa","npm"],"epss":0.00484,"epssPercentile":0.41477,"aliases":["GHSA-g2v8-7jhw-pp8p"],"ecosystem":"npm","ssvc":{"exploitation":"none","automatable":"no","technicalImpact":"total","timestamp":"2026-10-07T15:30:59.165626Z"},"scores":{"nvd":9.6,"vendor":8.1,"ghsa":9.6},"ingestedAt":"2026-10-06T22:23:15.967Z","slug":"CVE-2026-106501","body":"## Overview\n\nBackstage is an open framework for building developer portals. Prior to 3.3.1, 3.4.1, 4.0.3 and 4.1.0, the @backstage/plugin-scaffolder-backend package is affected by sensitive information exposure in scaffolder. An authenticated Backstage user who can read another user's Scaffolder task may receive internal execution data. In deployments where that data contains credentials for an external service, this may permit disclosure and unauthorized changes in that external service. This issue is fixed in versions 3.3.1, 3.4.1, 4.0.3 and 4.1.0.\n\n## Affected\n\n- `backstage/plugin-scaffolder-backend < 3.3.1`\n- `backstage/plugin-scaffolder-backend >= 3.4.0, < 3.4.1`\n- `backstage/plugin-scaffolder-backend >= 4.0.0, < 4.0.3`\n- `backstage/plugin-scaffolder-backend >= 4.0.4, < 4.1.0`\n- `backstage < 1.49.6`\n- `backstage >= 1.50.0, < 1.50.5`\n- `backstage >= 1.51.0, < 1.54.6`\n\n## Remediation\n\nUpgrade past the affected range:\n\n- `backstage/plugin-scaffolder-backend 4.1.0`\n- `backstage 1.54.6`\n\n## Package advisory (CVE-2026-106501)\n\nAffected packages:\n\n- `@backstage/plugin-scaffolder-backend < 3.3.1`\n- `@backstage/plugin-scaffolder-backend >= 3.4.0, < 3.4.1`\n- `@backstage/plugin-scaffolder-backend >= 4.0.0, < 4.0.3`\n- `@backstage/plugin-scaffolder-backend >= 4.0.4, < 4.1.0`\n\nPatched in:\n\n- `@backstage/plugin-scaffolder-backend 3.3.1`\n- `@backstage/plugin-scaffolder-backend 3.4.1`\n- `@backstage/plugin-scaffolder-backend 4.0.3`\n- `@backstage/plugin-scaffolder-backend 4.1.0`\n\nSource: https://github.com/advisories/GHSA-g2v8-7jhw-pp8p\n\n## Vendor advisories\n\n- **Red Hat VEX** · Important · affected: Red Hat Developer Hub, Self-service automation portal 2 · no fix planned: Red Hat Developer Hub, Self-service automation portal 2 · updated 2026-10-21 · [vex](https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-106501.json)\n- **RHSA-2026:86675** · Red Hat · fixed in: Red Hat Ansible Automation Platform 2.2 · released 2026-10-21 · [advisory](https://access.redhat.com/errata/RHSA-2026:86675)","depth":"midnight","depthScore":53,"depthScoreParts":{"impact":52.8,"likelihood":0.1,"exploitation":0,"ransomware":0},"changes":[]}