{"id":"CVE-2026-104476","url":"https://www.cyber-defence.io/tools/cve/CVE-2026-104476","generatedAt":"2026-10-28T03:59:14.897Z","title":"Backdrop CMS before 1.35.1 contains an information disclosure vulnerability that allows unauthenticated attackers to retrieve configuration export archives left on the server after transfer.","description":"Backdrop CMS before 1.35.1 contains an information disclosure vulnerability that allows unauthenticated attackers to retrieve configuration export archives left on the server after transfer. Attackers can download compressed archives generated by users with configuration export permission to obtain the full site configuration, including sensitive settings.","published":"2026-10-03T00:16:36.000Z","lastModified":"2026-10-06T15:25:01.000Z","status":"Deferred","sourceIdentifier":"disclosure@vulncheck.com","cvss":{"version":"4.0","score":8.2,"severity":"HIGH","vector":"CVSS:4.0/AV:N/AC:H/AT:P/PR:N/UI:N/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/M"},"cwe":["CWE-200"],"affected":[],"epss":{"score":0.00291,"percentile":0.21554,"date":"2026-10-27","history":[{"date":"2026-10-03","score":0.00291,"percentile":0.19705}]},"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 (0.29%). 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":"2026-10-03T00:16:36.000Z","detail":{"score":"8.2","severity":"HIGH","publishedAt":"2026-10-03T00:16:35.747Z"},"summary":"New CVE, high severity (CVSS 8.2)."}],"references":[{"url":"https://backdropcms.org/security/backdrop-sa-core-2026-006","source":"disclosure@vulncheck.com"},{"url":"https://github.com/backdrop/backdrop","source":"disclosure@vulncheck.com"},{"url":"https://github.com/backdrop/backdrop/commit/1ae67061d9d487bb6cb3b8611191354052f34749","source":"disclosure@vulncheck.com"},{"url":"https://www.vulncheck.com/advisories/backdrop-cms-before-1.35.1-information-disclosure-via-configuration-export-archive","source":"disclosure@vulncheck.com"}],"sources":{"nvd":"https://nvd.nist.gov/vuln/detail/CVE-2026-104476","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."}