{"id":"CVE-2026-88853","title":"Joomla Extension - regularlabs.com - Privileged stored XSS via event handler option in Modals Pro extension for Joomla < 17.0.0 - Modals Pro intentionally supports JavaScript Events such as on-open and on-closed","summary":"Joomla Extension - regularlabs.com - Privileged stored XSS via event handler option in Modals Pro extension for Joomla < 17.0.0 - Modals Pro intentionally supports JavaScript Events such as on-open and on-closed. Affected versions do not…","severity":"high","cvss":7.5,"cvssVector":"CVSS:4.0/AV:N/AC:L/AT:P/PR:H/UI:N/VC:H/VI:H/VA:L/SC:N/SI:N/SA:N/S:N/AU:N","cwe":["CWE-79"],"vendor":"regularlabs.com","product":"plg_system_modals","affected":["plg_system_modals 4.7.0-16.2.0"],"published":"2026-09-14","updated":"2026-09-16","sourceUpdated":"2026-09-16T19:28:06.713","source":"NVD","sourceUrl":"https://nvd.nist.gov/vuln/detail/CVE-2026-88853","references":[{"url":"https://www.regularlabs.com/","label":"security@joomla.org"}],"tags":["nvd","cve.org"],"epss":0.00418,"epssPercentile":0.33329,"ssvc":{"exploitation":"none","automatable":"no","technicalImpact":"total","timestamp":"2026-09-14T14:55:23.369039Z"},"cvssSource":"cna","ingestedAt":"2026-09-14T15:23:07.421Z","slug":"CVE-2026-88853","body":"## Overview\n\nJoomla Extension - regularlabs.com - Privileged stored XSS via event handler option in Modals Pro extension for Joomla < 17.0.0 - Modals Pro intentionally supports JavaScript Events such as on-open and on-closed. Affected versions do not distinguish trusted extension configuration from event code supplied in ordinary article content. A lower-privileged author can therefore use a documented executable feature which should be reserved for trusted authors.\n\n## Remediation\n\nRefer to the linked advisories for vendor-supplied fixes and affected version ranges.","depth":"twilight","depthScore":41,"depthScoreParts":{"impact":41.3,"likelihood":0.1,"exploitation":0,"ransomware":0},"changes":[]}