{"id":"CVE-2026-106501","url":"https://www.cyber-defence.io/tools/cve/CVE-2026-106501","generatedAt":"2026-10-28T04:14:22.929Z","title":"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.","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.","published":"2026-10-06T22:17:05.000Z","lastModified":"2026-10-13T14:38:16.000Z","status":"Analyzed","sourceIdentifier":"security-advisories@github.com","cvss":{"version":"3.1","score":9.6,"severity":"CRITICAL","vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:N"},"cwe":["CWE-200","CWE-201"],"affected":["linuxfoundation/backstage\\/plugin-scaffolder-backend","linuxfoundation/backstage"],"epss":{"score":0.00484,"percentile":0.41477,"date":"2026-10-27","history":[{"date":"2026-10-07","score":0.00473,"percentile":0.38882}]},"kev":{"listed":false},"exploits":{"count":0,"verified":false,"firstPublished":null,"source":"Exploit-DB (https://gitlab.com/exploit-database/exploitdb)","entries":[]},"verdict":{"level":"high","text":"High impact if exploited, but EPSS currently rates exploitation as unlikely (0.48%). Schedule it in the normal patch cycle and watch for a rise in EPSS or a public exploit."},"changes":[{"kind":"new","label":"New CVE","at":"2026-10-06T22:17:05.000Z","detail":{"score":"9.6","severity":"CRITICAL","publishedAt":"2026-10-06T22:17:05.217Z"},"summary":"New CVE, critical severity (CVSS 9.6)."}],"references":[{"url":"https://github.com/backstage/backstage/commit/66d2219edf0abe33ab7d0c1ced5d069d1e065be5","tags":["Patch"],"source":"security-advisories@github.com"},{"url":"https://github.com/backstage/backstage/commit/c19838870476a8e29144c84b1a5ac0654ec20fb5","tags":["Patch"],"source":"security-advisories@github.com"},{"url":"https://github.com/backstage/backstage/commit/e262d649981ff99bb01ca7077807ae3e25e85560","tags":["Patch"],"source":"security-advisories@github.com"},{"url":"https://github.com/backstage/backstage/releases/tag/v1.49.6","tags":["Patch","Release Notes"],"source":"security-advisories@github.com"},{"url":"https://github.com/backstage/backstage/releases/tag/v1.50.5","tags":["Patch","Release Notes"],"source":"security-advisories@github.com"},{"url":"https://github.com/backstage/backstage/releases/tag/v1.54.6","tags":["Patch","Release Notes"],"source":"security-advisories@github.com"},{"url":"https://github.com/backstage/backstage/security/advisories/GHSA-g2v8-7jhw-pp8p","tags":["Mitigation","Vendor Advisory"],"source":"security-advisories@github.com"}],"sources":{"nvd":"https://nvd.nist.gov/vuln/detail/CVE-2026-106501","epss":"https://www.first.org/epss/","kev":"https://www.cisa.gov/known-exploited-vulnerabilities-catalog","exploitdb":"https://www.exploit-db.com/"},"licence":"CC BY 4.0 — link back to the CVE Explorer if you publish the results; upstream data remains subject to its own terms."}