{"id":"CVE-2026-104729","aliases":[],"title":"Avada (Fusion) Builder <= 3.16.2 - Authenticated (Contributor+) Stored Cross-Site Scripting via 'tab_index' and 'empty_notice' Shortcode Attributes","titleSource":"Wordfence","descriptionSource":"Wordfence","products":[{"vendor":"themefusion","name":"Avada (Fusion) Builder","platforms":[],"versions":[{"version":"0","status":"affected","lessThanOrEqual":"3.16.2","versionType":"semver"}],"defaultStatus":"unaffected","source":"Wordfence","url":"https://www.cve.org/CVERecord?id=CVE-2026-104729"}],"remediation":[],"description":"The Avada (Fusion) Builder plugin for WordPress is vulnerable to Stored Cross-Site Scripting via the 'tab_index, empty_notice' parameter in all versions up to, and including, 3.16.2 due to insufficient input sanitization and output escaping. This makes it possible for authenticated attackers, with contributor-level access and above, to inject arbitrary web scripts in pages that will execute whenever a user accesses an injected page. wp_kses_post does not strip the payload on save because the dangerous characters reside within shortcode attribute text between square brackets, which kses treats as plain text rather than HTML markup.","severity":"medium","score":6.4,"published":"2026-10-28T06:45:13.360Z","modified":"2026-10-28T06:45:13.360Z","withdrawn":false,"knownExploited":false,"affected":[],"references":["https://www.wordfence.com/threat-intel/vulnerabilities/id/650d346d-c30a-4ee1-ac50-6a264e181174?source=cve","https://avada.com/blog/version-7-16-3-security-update/"],"sources":[{"name":"CVE","id":"CVE-2026-104729","modified":"2026-10-28T06:45:13.360Z","url":"https://www.cve.org/CVERecord?id=CVE-2026-104729"}],"assessments":[{"source":"Wordfence","vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:L/I:L/A:N","score":6.4}],"sourceAffected":[],"kev":{"status":"not-listed","checkedAt":"2026-10-28T23:45:31.121Z"},"coverage":[{"source":"NVD","status":"available","checkedAt":"2026-10-28T09:45:33.190Z","attemptedAt":"2026-10-28T09:45:33.190Z"},{"source":"GHSA","status":"refresh-failed","attemptedAt":"2026-10-28T09:45:31.240Z"},{"source":"EUVD","status":"available","checkedAt":"2026-10-28T09:45:32.709Z","attemptedAt":"2026-10-28T09:45:32.709Z"},{"source":"EPSS","status":"no-result","checkedAt":"2026-10-28T09:45:32.460Z","attemptedAt":"2026-10-28T09:45:32.460Z"}],"evidence":[{"source":"ENISA EUVD","id":"EUVD-2026-111753","url":"https://euvd.enisa.europa.eu/vulnerability/EUVD-2026-111753","modified":"Oct 28, 2026, 6:45:13 AM","score":6.4,"vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:L/I:L/A:N","checkedAt":"2026-10-28T09:45:32.709Z"},{"source":"NVD","id":"CVE-2026-104729","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-104729","modified":"2026-10-28T07:16:43.370","score":6.4,"vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:L/I:L/A:N","checkedAt":"2026-10-28T09:45:33.190Z"}]}