{"cve":"CVE-2026-106501","nvd":{"published":"2026-10-06T22:17:05.217","modified":"2026-10-13T14:38:15.587","status":"Analyzed","description":"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 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.","cvss_v4":null,"cvss_v3":{"version":"3.1","vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:N","score":9.6},"cwes":["CWE-200","CWE-201"],"references":["https://github.com/backstage/backstage/commit/66d2219edf0abe33ab7d0c1ced5d069d1e065be5","https://github.com/backstage/backstage/commit/c19838870476a8e29144c84b1a5ac0654ec20fb5","https://github.com/backstage/backstage/commit/e262d649981ff99bb01ca7077807ae3e25e85560","https://github.com/backstage/backstage/releases/tag/v1.49.6","https://github.com/backstage/backstage/releases/tag/v1.50.5"],"products":["linuxfoundation:backstage","linuxfoundation:backstage\\/plugin-scaffolder-backend"],"source":"nvd","synced_at":"2026-10-19T22:58:01.639778232+00:00"},"epss":{"cve":"CVE-2026-106501","score":0.00484,"percentile":0.41382,"date":"2026-10-25"},"kev":null,"osv":[{"id":"GHSA-g2v8-7jhw-pp8p","url":"https://osv.dev/vulnerability/GHSA-g2v8-7jhw-pp8p","summary":"Backstage: Sensitive information exposure in Scaffolder","modified":"2026-10-07T18:15:10.728715918Z","packages":[{"ecosystem":"npm","name":"@backstage/plugin-scaffolder-backend","purl":"pkg:npm/%40backstage/plugin-scaffolder-backend","ranges":["<3.3.1"],"fixed":["3.3.1"]},{"ecosystem":"npm","name":"@backstage/plugin-scaffolder-backend","purl":"pkg:npm/%40backstage/plugin-scaffolder-backend","ranges":[">=3.4.0 <3.4.1"],"fixed":["3.4.1"]},{"ecosystem":"npm","name":"@backstage/plugin-scaffolder-backend","purl":"pkg:npm/%40backstage/plugin-scaffolder-backend","ranges":[">=4.0.0 <4.0.3"],"fixed":["4.0.3"]},{"ecosystem":"npm","name":"@backstage/plugin-scaffolder-backend","purl":"pkg:npm/%40backstage/plugin-scaffolder-backend","ranges":[">=4.0.4 <4.1.0"],"fixed":["4.1.0"]}]}],"attribution":["This product uses the NVD API but is not endorsed or certified by the NVD.","EPSS scores: FIRST Exploit Prediction Scoring System, https://www.first.org/epss","Known exploited vulnerabilities: CISA Known Exploited Vulnerabilities Catalog, https://www.cisa.gov/known-exploited-vulnerabilities-catalog","Package advisories: OSV (https://osv.dev), from the GitHub Advisory Database, PyPA, Go, RustSec and other ecosystem databases, under CC-BY 4.0 or CC0","CVE records: the CVE Program's CVE List (https://www.cve.org), under its terms of use (https://www.cve.org/Legal/TermsOfUse). CVE is a registered trademark of The MITRE Corporation; this product is not affiliated with the CVE Program."]}