{"id":"CVE-2026-106493","url":"https://www.cyber-defence.io/tools/cve/CVE-2026-106493","generatedAt":"2026-10-27T23:59:06.399Z","title":"Backstage is an open framework for building developer portals.","description":"Backstage is an open framework for building developer portals. Prior to 1.54.6, cloud storage catalog providers did not sufficiently validate object paths. A principal able to create or rename objects in a configured Azure Blob Storage or AWS S3 catalog source could cause catalog descriptors to be read from outside the intended storage boundary, limited to locations reachable with the backend's configured credentials. This issue is fixed in 1.54.6.","published":"2026-10-06T21:17:18.000Z","lastModified":"2026-10-22T13:13:46.000Z","status":"Analyzed","sourceIdentifier":"security-advisories@github.com","cvss":{"version":"3.1","score":4.1,"severity":"MEDIUM","vector":"CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:C/C:L/I:N/A:N"},"cwe":["CWE-22"],"affected":["linuxfoundation/backstage","linuxfoundation/backstage\\/backend-defaults","linuxfoundation/backstage\\/plugin-catalog-backend-module-aws","linuxfoundation/backstage\\/plugin-catalog-backend-module-azure"],"epss":{"score":0.00276,"percentile":0.19885,"date":"2026-10-26","history":[{"date":"2026-10-07","score":0.00259,"percentile":0.16084}]},"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 (0.28%). Track it; it rarely justifies an emergency change on its own."},"changes":[{"kind":"scored","label":"Newly scored","at":"2026-10-22T15:15:14.000Z","detail":{"from":"3.0","score":"4.1","severity":"MEDIUM","fromSeverity":"LOW"},"summary":"Now scored CVSS 4.1 MEDIUM (was 3.0)."},{"kind":"new","label":"New CVE","at":"2026-10-06T21:17:18.000Z","detail":{"score":"3.0","severity":"LOW","publishedAt":"2026-10-06T21:17:18.370Z"},"summary":"New CVE, medium severity (CVSS 4.1)."}],"references":[{"url":"https://github.com/backstage/backstage/commit/47ddbd8b4a3efd812309f759c38f4877fbd9e5ff","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-xvh9-35w9-42m4","tags":["Mitigation","Vendor Advisory"],"source":"security-advisories@github.com"}],"sources":{"nvd":"https://nvd.nist.gov/vuln/detail/CVE-2026-106493","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."}