{"id":"CVE-2026-106494","url":"https://www.cyber-defence.io/tools/cve/CVE-2026-106494","generatedAt":"2026-10-28T01:52:56.093Z","title":"Prior to 0.17.8, the @backstage/backend-defaults package is affected by improper input validation in cloud storage url readers.","description":"Backstage is an open framework for building developer portals. Prior to 0.17.8, the @backstage/backend-defaults package is affected by improper input validation in cloud storage url readers. An attacker with write access to a cloud storage bucket used by Backstage could craft object names that could collide with protected files in the output directory. In certain deployment configurations, this could lead to content injection. This issue is fixed in version 0.17.8.","published":"2026-10-06T21:17:19.000Z","lastModified":"2026-10-22T13:03:54.000Z","status":"Analyzed","sourceIdentifier":"security-advisories@github.com","cvss":{"version":"3.1","score":4.9,"severity":"MEDIUM","vector":"CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:N/I:H/A:N"},"cwe":["CWE-22","CWE-73"],"affected":["linuxfoundation/backstage\\/backend defaults","linuxfoundation/backstage"],"epss":{"score":0.00306,"percentile":0.23128,"date":"2026-10-26","history":[{"date":"2026-10-07","score":0.00286,"percentile":0.19328}]},"kev":{"listed":false},"exploits":{"count":0,"verified":false,"firstPublished":null,"source":"Exploit-DB (https://gitlab.com/exploit-database/exploitdb)","entries":[]},"verdict":{"level":"low","text":"Lower severity and a low EPSS score (0.31%). Track it; it rarely justifies an emergency change on its own."},"changes":[{"kind":"new","label":"New CVE","at":"2026-10-06T21:17:19.000Z","detail":{"score":"4.4","severity":"MEDIUM","publishedAt":"2026-10-06T21:17:18.520Z"},"summary":"New CVE, medium severity (CVSS 4.9)."}],"references":[{"url":"https://github.com/backstage/backstage/commit/14e925ce5b905dd8daa64c3009722febda76034c","tags":["Patch"],"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-7649-wm97-w3j3","tags":["Mitigation","Vendor Advisory"],"source":"security-advisories@github.com"}],"sources":{"nvd":"https://nvd.nist.gov/vuln/detail/CVE-2026-106494","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."}