{"id":"CVE-2026-107764","url":"https://www.cyber-defence.io/tools/cve/CVE-2026-107764","generatedAt":"2026-10-28T00:59:35.427Z","title":"The SiteOrigin CSS plugin for WordPress is vulnerable to Stored DOM-Based Cross-Site Scripting via the 'url (comment_author_url)' parameter in all versions up to, and including, 1.6.7 due to insufficient input sanitization and output escaping.","description":"The SiteOrigin CSS plugin for WordPress is vulnerable to Stored DOM-Based Cross-Site Scripting via the 'url (comment_author_url)' parameter in all versions up to, and including, 1.6.7 due to insufficient input sanitization and output escaping. This makes it possible for unauthenticated attackers to inject arbitrary web scripts in pages that will execute whenever a user accesses an injected page. This is possible because WordPress core's esc_url() preserves HTML entity-encoded characters, allowing a crafted entity-encoded payload in the comment 'Website' field to survive storage and be DOM-decoded by the browser into executable markup at the sink.","published":"2026-10-16T06:17:06.000Z","lastModified":"2026-10-16T15:17:06.000Z","status":"Deferred","sourceIdentifier":"security@wordfence.com","cvss":{"version":"3.1","score":7.2,"severity":"HIGH","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:L/I:L/A:N"},"cwe":["CWE-79"],"affected":[],"epss":{"score":0.00236,"percentile":0.14502,"date":"2026-10-26","history":[{"date":"2026-10-16","score":0.00236,"percentile":0.13601}]},"kev":{"listed":false},"exploits":{"count":0,"verified":false,"firstPublished":null,"source":"Exploit-DB (https://gitlab.com/exploit-database/exploitdb)","entries":[]},"verdict":{"level":"high","text":"High impact if exploited, but EPSS currently rates exploitation as unlikely (0.24%). Schedule it in the normal patch cycle and watch for a rise in EPSS or a public exploit."},"changes":[{"kind":"new","label":"New CVE","at":"2026-10-16T06:17:06.000Z","detail":{"score":"7.2","severity":"HIGH","publishedAt":"2026-10-16T06:17:06.380Z"},"summary":"New CVE, high severity (CVSS 7.2)."}],"references":[{"url":"https://github.com/siteorigin/so-css/compare/1.6.7...1.6.8","source":"security@wordfence.com"},{"url":"https://plugins.trac.wordpress.org/browser/so-css/tags/1.6.6/js/inspector.js#L280","source":"security@wordfence.com"},{"url":"https://plugins.trac.wordpress.org/browser/so-css/tags/1.6.6/so-css.php#L69","source":"security@wordfence.com"},{"url":"https://plugins.trac.wordpress.org/browser/so-css/tags/1.6.6/so-css.php#L899","source":"security@wordfence.com"},{"url":"https://www.wordfence.com/threat-intel/vulnerabilities/id/b0ff9652-1b45-43d6-949a-92bfeaee96d3?source=cve","source":"security@wordfence.com"}],"sources":{"nvd":"https://nvd.nist.gov/vuln/detail/CVE-2026-107764","epss":"https://www.first.org/epss/","kev":"https://www.cisa.gov/known-exploited-vulnerabilities-catalog","exploitdb":"https://www.exploit-db.com/"},"licence":"CC BY 4.0 — link back to the CVE Explorer if you publish the results; upstream data remains subject to its own terms."}