{"id":"CVE-2026-106502","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 sensitive information in Scaffolder task failure events. Under specific template and failure con…","severity":"medium","cvss":5.3,"cvssVector":"CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:H/I:N/A:N","cwe":["CWE-532","CWE-209"],"vendor":"linuxfoundation","product":"backstage/plugin-scaffolder-backend","affected":["backstage/plugin-scaffolder-backend < 4.1.0","backstage < 1.54.6"],"patched":["backstage/plugin-scaffolder-backend 4.1.0","backstage 1.54.6"],"published":"2026-10-06","updated":"2026-10-13","sourceUpdated":"2026-10-13T14:38:07.077","source":"NVD","sourceUrl":"https://nvd.nist.gov/vuln/detail/CVE-2026-106502","references":[{"url":"https://github.com/backstage/backstage/commit/3f1e869708f002fb9838624b7379deb251691b47","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-95p4-vv4g-jxxm","label":"security-advisories@github.com"},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2026-106502"},{"url":"https://github.com/advisories/GHSA-95p4-vv4g-jxxm"},{"url":"https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-106502.json"},{"url":"https://access.redhat.com/security/cve/CVE-2026-106502"},{"url":"https://bugzilla.redhat.com/show_bug.cgi?id=2547223"},{"url":"https://www.cve.org/CVERecord?id=CVE-2026-106502"}],"tags":["nvd","ghsa","npm","cve.org","csaf","vex","red-hat"],"epss":0.00291,"epssPercentile":0.21507,"aliases":["GHSA-95p4-vv4g-jxxm"],"ecosystem":"npm","ssvc":{"exploitation":"none","automatable":"no","technicalImpact":"partial","timestamp":"2026-10-07T15:08:57.835240Z"},"ingestedAt":"2026-10-06T22:23:15.967Z","slug":"CVE-2026-106502","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 sensitive information in Scaffolder task failure events. Under specific template and failure conditions, an authenticated user may retrieve backend-managed credentials used during task execution from affected task events. This issue is fixed in version 4.1.0.\n\n## Affected\n\n- `backstage/plugin-scaffolder-backend < 4.1.0`\n- `backstage < 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-2026-106502)\n\nAffected packages:\n\n- `@backstage/plugin-scaffolder-backend < 4.1.0`\n\nPatched in:\n\n- `@backstage/plugin-scaffolder-backend 4.1.0`\n\nSource: https://github.com/advisories/GHSA-95p4-vv4g-jxxm\n\n## Vendor advisories\n\n- **Red Hat VEX** · Moderate · affected: Red Hat Developer Hub, Self-service automation portal 2 · no fix planned: Red Hat Developer Hub, Self-service automation portal 2 · updated 2026-10-09 · [vex](https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-106502.json)","depth":"sunlit","depthScore":29,"depthScoreParts":{"impact":29.2,"likelihood":0.1,"exploitation":0,"ransomware":0},"changes":[]}