{"id":"CVE-2026-102173","aliases":["EUVD-2026-94167","GHSA-7vc3-qmp9-p8w8"],"status":"published","title":"Kirki – Freeform Page Builder, Website Builder \u0026 Customizer \u003c= 6.3.1 - Unauthenticated Stored Cross-Site Scripting via Registration Metadata","description":"The Kirki – Freeform Page Builder, Website Builder \u0026 Customizer plugin for WordPress is vulnerable to Stored Cross-Site Scripting via registration metadata in all versions up to, and including, 6.3.1 This is due to insufficient escaping in `ExceptionalElements::image_element()`, which concatenates a user-meta value straight into an `\u003cimg src=\"…\"\u003e` attribute. This makes it possible for unauthenticated attackers to inject arbitrary web scripts that execute whenever a user accesses a page rendering a Kirki users collection whose image element is bound to one of the nine registration meta fields. Requires public user registration to be enabled and a published page carrying a `kirki-register` element, which prints the required element nonce into the public markup.","severity":{"version":"3.1","score":7.2,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:L/I:L/A:N","level":"high","assessor":"cna","from":"cve"},"epss":{"day":"2026-11-11","score":0.00366,"percentile":0.30852,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":false},"cwes":["CWE-79"],"published":"2026-10-07T05:30:40Z","modified":"2026-10-07T17:16:45Z","products":[{"vendor":"themeum","product":"kirki – freeform page builder, website builder \u0026 customizer"}],"references":[{"url":"https://www.wordfence.com/threat-intel/vulnerabilities/id/368001e9-3806-41d5-902e-0facf7fb31ff?source=cve"},{"url":"https://plugins.trac.wordpress.org/browser/kirki/tags/6.3.1/includes/Frontend/Preview/ExceptionalElements.php#L1184"},{"url":"https://plugins.trac.wordpress.org/browser/kirki/tags/6.3.1/includes/Frontend/Preview/ExceptionalElements.php#L1079"},{"url":"https://plugins.trac.wordpress.org/browser/kirki/tags/6.3.1/includes/HelperFunctions.php#L1151"},{"url":"https://plugins.trac.wordpress.org/browser/kirki/tags/6.3.1/ComponentLibrary/controller/CompLibFormHandler.php#L361"},{"url":"https://plugins.trac.wordpress.org/browser/kirki/tags/6.3.1/ComponentLibrary/controller/CompLibFormHandler.php#L389"},{"url":"https://plugins.trac.wordpress.org/browser/kirki/tags/6.3.1/ComponentLibrary/controller/CompLibFormHandler.php#L76"},{"url":"https://plugins.trac.wordpress.org/browser/kirki/tags/6.3.1/ComponentLibrary/controller/ElementGenerator.php#L259"},{"url":"https://plugins.trac.wordpress.org/browser/kirki/tags/6.3.1/includes/Frontend/Preview/Utils.php#L308"},{"url":"https://plugins.trac.wordpress.org/changeset?reponame=\u0026new=3718900%40kirki%2Ftags%2F6.3.2\u0026old=3697265%40kirki%2Ftags%2F6.3.1"},{"url":"https://plugins.trac.wordpress.org/changeset/3718900/kirki/trunk/includes/Frontend/Preview/ExceptionalElements.php"},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2026-102173"},{"url":"https://github.com/advisories/GHSA-7vc3-qmp9-p8w8"}],"sources":{"cve":[{"id":"CVE-2026-102173","title":"Kirki – Freeform Page Builder, Website Builder \u0026 Customizer \u003c= 6.3.1 - Unauthenticated Stored Cross-Site Scripting via Registration Metadata","description":"The Kirki – Freeform Page Builder, Website Builder \u0026 Customizer plugin for WordPress is vulnerable to Stored Cross-Site Scripting via registration metadata in all versions up to, and including, 6.3.1 This is due to insufficient escaping in `ExceptionalElements::image_element()`, which concatenates a user-meta value straight into an `\u003cimg src=\"…\"\u003e` attribute. This makes it possible for unauthenticated attackers to inject arbitrary web scripts that execute whenever a user accesses a page rendering a Kirki users collection whose image element is bound to one of the nine registration meta fields. Requires public user registration to be enabled and a published page carrying a `kirki-register` element, which prints the required element nonce into the public markup.","status":"published","published":"2026-10-07T05:30:40.929Z","modified":"2026-10-07T17:05:30.285Z","cvss":[{"version":"3.1","score":7.2,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:L/I:L/A:N","level":"high","assessor":"cna"}],"cwes":["CWE-79"],"updated_at":"2026-11-02T13:38:54.394896Z"}],"euvd":[{"id":"EUVD-2026-94167","description":"The Kirki – Freeform Page Builder, Website Builder \u0026 Customizer plugin for WordPress is vulnerable to Stored Cross-Site Scripting via registration metadata in all versions up to, and including, 6.3.1 This is due to insufficient escaping in `ExceptionalElements::image_element()`, which concatenates a user-meta value straight into an `\u003cimg src=\"…\"\u003e` attribute. This makes it possible for unauthenticated attackers to inject arbitrary web scripts that execute whenever a user accesses a page rendering a Kirki users collection whose image element is bound to one of the nine registration meta fields. Requires public user registration to be enabled and a published page carrying a `kirki-register` element, which prints the required element nonce into the public markup.","status":"published","published":"2026-10-07T05:30:40Z","modified":"2026-10-07T17:05:30Z","cvss":[{"version":"3.1","score":7.2,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:L/I:L/A:N","level":"high"}],"updated_at":"2026-11-02T17:27:34.815018Z"}],"ghsa":[{"id":"GHSA-7vc3-qmp9-p8w8","title":"The Kirki – Freeform Page Builder, Website Builder \u0026 Customizer plugin for WordPress is...","description":"The Kirki – Freeform Page Builder, Website Builder \u0026 Customizer plugin for WordPress is vulnerable to Stored Cross-Site Scripting via registration metadata in all versions up to, and including, 6.3.1 This is due to insufficient escaping in `ExceptionalElements::image_element()`, which concatenates a user-meta value straight into an `\u003cimg src=\"…\"\u003e` attribute. This makes it possible for unauthenticated attackers to inject arbitrary web scripts that execute whenever a user accesses a page rendering a Kirki users collection whose image element is bound to one of the nine registration meta fields. Requires public user registration to be enabled and a published page carrying a `kirki-register` element, which prints the required element nonce into the public markup.","status":"published","published":"2026-10-07T06:33:01Z","modified":"2026-10-07T06:33:01Z","cvss":[{"version":"3.1","score":7.2,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:L/I:L/A:N","level":"high"}],"cwes":["CWE-79"],"updated_at":"2026-11-02T15:12:53.496212Z"}],"nvd":[{"id":"CVE-2026-102173","description":"The Kirki – Freeform Page Builder, Website Builder \u0026 Customizer plugin for WordPress is vulnerable to Stored Cross-Site Scripting via registration metadata in all versions up to, and including, 6.3.1 This is due to insufficient escaping in `ExceptionalElements::image_element()`, which concatenates a user-meta value straight into an `\u003cimg src=\"…\"\u003e` attribute. This makes it possible for unauthenticated attackers to inject arbitrary web scripts that execute whenever a user accesses a page rendering a Kirki users collection whose image element is bound to one of the nine registration meta fields. Requires public user registration to be enabled and a published page carrying a `kirki-register` element, which prints the required element nonce into the public markup.","status":"published","published":"2026-10-07T06:16:33.217Z","modified":"2026-10-07T17:16:45.797Z","cvss":[{"version":"3.1","score":7.2,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:L/I:L/A:N","level":"high","assessor":"secondary"}],"cwes":["CWE-79"],"updated_at":"2026-11-02T14:12:54.809359Z"}]}}