{"id":"CVE-2026-77991","aliases":["EUVD-2026-66866","GHSA-gh3c-9wwf-mj2v"],"status":"published","title":"Joomla Extension - joomlaeventmanager.net - Privileged remote code execution in Joomla Event Manager \u003c 5.0.1","description":"Joomla Extension - joomlaeventmanager.net - Privileged remote code execution in Joomla Event Manager \u003c 5.0.1 - The administrator source model allows to write dangerous file type incl. PHP, leading to remote code execution.","severity":{"version":"4.0","score":9.4,"vector":"CVSS:4.0/AV:N/AC:L/AT:N/PR:H/UI:N/VC:H/VI:H/VA:H/SC:H/SI:H/SA:H","level":"critical","assessor":"cna","from":"cve"},"epss":{"day":"2026-11-11","score":0.00642,"percentile":0.51231,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":true,"fix_available":false},"cwes":["CWE-434"],"published":"2026-08-27T05:50:13Z","modified":"2026-08-28T16:09:10Z","exploits":[{"source":"pocgithub","id":"abraxas/CVE-2026-77991","title":"abraxas/CVE-2026-77991","date":"2026-09-18","url":"https://github.com/abraxas/CVE-2026-77991"}],"products":[{"vendor":"joomlaeventmanager.net","product":"jem - joomla event manager extension for joomla"}],"references":[{"url":"https://www.joomlaeventmanager.net/","tags":["product"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2026-77991"},{"url":"https://www.joomlaeventmanager.net"},{"url":"https://github.com/advisories/GHSA-gh3c-9wwf-mj2v"}],"sources":{"cve":[{"id":"CVE-2026-77991","title":"Joomla Extension - joomlaeventmanager.net - Privileged remote code execution in Joomla Event Manager \u003c 5.0.1","description":"Joomla Extension - joomlaeventmanager.net - Privileged remote code execution in Joomla Event Manager \u003c 5.0.1 - The administrator source model allows to write dangerous file type incl. PHP, leading to remote code execution.","status":"published","published":"2026-08-27T05:50:13.521Z","modified":"2026-08-28T07:47:57.914Z","cvss":[{"version":"4.0","score":9.4,"vector":"CVSS:4.0/AV:N/AC:L/AT:N/PR:H/UI:N/VC:H/VI:H/VA:H/SC:H/SI:H/SA:H","level":"critical","assessor":"cna"}],"cwes":["CWE-434"],"updated_at":"2026-11-02T14:20:15.712761Z"}],"euvd":[{"id":"EUVD-2026-66866","description":"Joomla Extension - joomlaeventmanager.net - Privileged remote code execution in Joomla Event Manager \u003c 5.0.1 - The administrator source model allows to write dangerous file type incl. PHP, leading to remote code execution.","status":"published","published":"2026-08-27T05:50:13Z","modified":"2026-08-28T07:47:57Z","cvss":[{"version":"4.0","score":9.4,"vector":"CVSS:4.0/AV:N/AC:L/AT:N/PR:H/UI:N/VC:H/VI:H/VA:H/SC:H/SI:H/SA:H","level":"critical"}],"updated_at":"2026-11-02T18:01:23.608347Z"}],"ghsa":[{"id":"GHSA-gh3c-9wwf-mj2v","title":"Joomla Extension - joomlaeventmanager.net - Privileged remote code execution in Joomla Event...","description":"Joomla Extension - joomlaeventmanager.net - Privileged remote code execution in Joomla Event Manager \u003c 5.0.1 - The administrator source model allows to write dangerous file type incl. PHP, leading to remote code execution.","status":"published","published":"2026-08-27T06:31:36Z","modified":"2026-08-27T06:31:43Z","cvss":[{"version":"4.0","score":9.4,"vector":"CVSS:4.0/AV:N/AC:L/AT:N/PR:H/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/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X","level":"critical"}],"cwes":["CWE-434"],"updated_at":"2026-11-02T15:11:02.620282Z"}],"nvd":[{"id":"CVE-2026-77991","description":"Joomla Extension - joomlaeventmanager.net - Privileged remote code execution in Joomla Event Manager \u003c 5.0.1 - The administrator source model allows to write dangerous file type incl. PHP, leading to remote code execution.","status":"published","published":"2026-08-27T06:17:28.97Z","modified":"2026-08-28T16:09:10.947Z","cvss":[{"version":"4.0","score":9.4,"vector":"CVSS:4.0/AV:N/AC:L/AT:N/PR:H/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/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X","level":"critical","assessor":"secondary"}],"cwes":["CWE-434"],"updated_at":"2026-11-02T14:12:42.035353Z"}]}}