{"id":"CVE-2026-105606","url":"https://www.cyber-defence.io/tools/cve/CVE-2026-105606","generatedAt":"2026-11-04T11:49:47.476Z","title":"Joomla Extension - joomlaboat.com - Unauthenticated arbitrary file upload in Custom Tables < 3.7.8 - An unauthenticated attacker can upload a polyglot file with an attacker-controlled extension to the web-accessible tmp directory of any Joomla site that…","description":"Joomla Extension - joomlaboat.com - Unauthenticated arbitrary file upload in Custom Tables < 3.7.8 - An unauthenticated attacker can upload a polyglot file with an attacker-controlled extension to the web-accessible tmp directory of any Joomla site that exposes a public Custom Tables submission form, and the stored path is disclosed in the response. By default the uploaded file is served as static content, so the primary impact is an unauthenticated arbitrary file write to a web-accessible directory, which allows hosting of attacker-controlled content (for example phishing or malware pages) under the victim's domain.","published":"2026-11-02T19:17:50.000Z","lastModified":"2026-11-02T20:17:27.000Z","status":"Deferred","sourceIdentifier":"security@joomla.org","cvss":{"version":"4.0","score":9.5,"severity":"CRITICAL","vector":"CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:H/VI:H/VA:H/SC:H/SI:H/SA:H/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/M"},"cwe":["CWE-434"],"affected":[],"epss":{"score":0.00363,"percentile":0.30218,"date":"2026-11-03","history":[{"date":"2026-11-03","score":0.00363,"percentile":0.30218}]},"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 (0.36%). 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":"2026-11-02T19:17:50.000Z","detail":{"score":"9.5","severity":"CRITICAL","publishedAt":"2026-11-02T19:17:50.330Z"},"summary":"New CVE, critical severity (CVSS 9.5)."}],"references":[{"url":"https://joomlaboat.com","source":"security@joomla.org"}],"sources":{"nvd":"https://nvd.nist.gov/vuln/detail/CVE-2026-105606","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."}