{"id":"CVE-2026-104729","state":"PUBLISHED","title":"Avada (Fusion) Builder <= 3.16.2 - Authenticated (Contributor+) Stored Cross-Site Scripting via 'tab_index' and 'empty_notice' Shortcode Attributes","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.","publishedAt":"2026-10-28T06:45:13.360Z","updatedAt":"2026-10-29T01:41:52.852Z","severity":{"score":6.4,"label":"Medium","version":"3.1","vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:L/I:L/A:N","source":"Wordfence"},"assigner":"Wordfence","products":["themefusion Avada (Fusion) Builder"],"affected":[{"vendor":"themefusion","product":"Avada (Fusion) Builder","defaultStatus":"unaffected","versions":[{"version":"0","status":"affected","lessThanOrEqual":"3.16.2","versionType":"semver"}]}],"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/"],"weaknesses":["CWE-79"],"ingestedAt":"2026-10-29T20:10:23.711Z","source":{"repository":"CVEProject/cvelistV5","path":"cves/2026/104xxx/CVE-2026-104729.json","commit":"556c9d3a8cd17e218bb8e452ba7cd619a384ff47"},"raw":{"dataType":"CVE_RECORD","dataVersion":"5.2","cveMetadata":{"cveId":"CVE-2026-104729","state":"PUBLISHED","datePublished":"2026-10-28T06:45:13.360Z","dateUpdated":"2026-10-29T01:41:52.852Z","assignerShortName":"Wordfence","assignerOrgId":"b15e7b5b-3da4-40ae-a43c-f7aa60e62599","dateReserved":"2026-10-02T11:47:54.561Z"},"containers":{"cna":{"title":"Avada (Fusion) Builder <= 3.16.2 - Authenticated (Contributor+) Stored Cross-Site Scripting via 'tab_index' and 'empty_notice' Shortcode Attributes","descriptions":[{"lang":"en","value":"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."}],"affected":[{"vendor":"themefusion","product":"Avada (Fusion) Builder","defaultStatus":"unaffected","versions":[{"version":"0","status":"affected","lessThanOrEqual":"3.16.2","versionType":"semver"}]}],"references":[{"url":"https://www.wordfence.com/threat-intel/vulnerabilities/id/650d346d-c30a-4ee1-ac50-6a264e181174?source=cve"},{"url":"https://avada.com/blog/version-7-16-3-security-update/"}],"metrics":[{"cvssV3_1":{"version":"3.1","vectorString":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:L/I:L/A:N","baseScore":6.4,"baseSeverity":"MEDIUM"}}],"problemTypes":[{"descriptions":[{"cweId":"CWE-79","lang":"en","description":"CWE-79 Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')","type":"CWE"}]}],"providerMetadata":{"shortName":"Wordfence","orgId":"b15e7b5b-3da4-40ae-a43c-f7aa60e62599","dateUpdated":"2026-10-28T06:45:13.360Z"},"credits":[{"lang":"en","type":"finder","value":"Wordfence PRISM"}],"timeline":[{"time":"2026-10-02T12:03:55.000Z","lang":"en","value":"Vendor Notified"},{"time":"2026-10-27T17:54:48.000Z","lang":"en","value":"Disclosed"}]},"adp":[{"title":"CISA ADP Vulnrichment","metrics":[{"other":{"type":"ssvc","content":{"id":"CVE-2026-104729","role":"CISA Coordinator","options":[{"Exploitation":"none"},{"Automatable":"no"},{"Technical Impact":"partial"}],"version":"2.0.3","timestamp":"2026-10-29T01:30:18.638453Z"}}}],"providerMetadata":{"shortName":"CISA-ADP","orgId":"134c704f-9b21-4f2e-91b3-4a467353bcc0","dateUpdated":"2026-10-29T01:41:52.852Z"}}]}}}