{"id":"CVE-2026-106501","published":"2026-10-06T22:17:05.217","lastModified":"2026-10-07T17:16:49.597","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.","cvssScore":9.6,"cvssSeverity":"CRITICAL","cvssVector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:N","cwes":["CWE-200","CWE-201"],"vendors":[],"products":[],"references":[{"url":"https://github.com/backstage/backstage/commit/66d2219edf0abe33ab7d0c1ced5d069d1e065be5","tags":[]},{"url":"https://github.com/backstage/backstage/commit/c19838870476a8e29144c84b1a5ac0654ec20fb5","tags":[]},{"url":"https://github.com/backstage/backstage/commit/e262d649981ff99bb01ca7077807ae3e25e85560","tags":[]},{"url":"https://github.com/backstage/backstage/releases/tag/v1.49.6","tags":[]},{"url":"https://github.com/backstage/backstage/releases/tag/v1.50.5","tags":[]},{"url":"https://github.com/backstage/backstage/releases/tag/v1.54.6","tags":[]},{"url":"https://github.com/backstage/backstage/security/advisories/GHSA-g2v8-7jhw-pp8p","tags":[]}],"exploitRefs":[{"url":"https://github.com/backstage/backstage/commit/66d2219edf0abe33ab7d0c1ced5d069d1e065be5","tags":[]},{"url":"https://github.com/backstage/backstage/commit/c19838870476a8e29144c84b1a5ac0654ec20fb5","tags":[]},{"url":"https://github.com/backstage/backstage/commit/e262d649981ff99bb01ca7077807ae3e25e85560","tags":[]},{"url":"https://github.com/backstage/backstage/releases/tag/v1.49.6","tags":[]},{"url":"https://github.com/backstage/backstage/releases/tag/v1.50.5","tags":[]},{"url":"https://github.com/backstage/backstage/releases/tag/v1.54.6","tags":[]},{"url":"https://github.com/backstage/backstage/security/advisories/GHSA-g2v8-7jhw-pp8p","tags":[]}],"hasPoc":true,"ai":{"summary":"The flaw allows an authenticated user to expose sensitive internal execution data from another user's Scaffolder task, potentially leading to unauthorized changes in external services.","exploitability":"Exploitation requires an authenticated user who can read another user's Scaffolder task. The difficulty depends on access controls and the presence of sensitive credentials in the execution data.","blast_radius":"If exploited, this could lead to unauthorized changes in external services, potentially compromising sensitive data and services.","remediation":"Upgrade to Backstage version 3.3.1, 3.4.1, 4.0.3, or 4.1.0.","detection":"No reliable host or network indicator is derivable from the published description.","tags":["sensitive-info-exposure","auth-required","web"],"model":"qwen2.5:7b-instruct","analyzedAt":"2026-10-07T08:43:58.674Z"}}