{"id":"CVE-2026-85653","url":"https://www.cyber-defence.io/tools/cve/CVE-2026-85653","generatedAt":"2026-10-27T23:56:58.294Z","title":"The Contextual Related Posts plugin for WordPress is vulnerable to Stored Cross-Site Scripting via 'other_attributes' Block Parameter in all versions up to, and including, 4.4.1 due to insufficient input sanitization and output escaping.","description":"The Contextual Related Posts plugin for WordPress is vulnerable to Stored Cross-Site Scripting via 'other_attributes' Block Parameter in all versions up to, and including, 4.4.1 due to insufficient input sanitization and output escaping. This makes it possible for authenticated attackers, with author-level access and above, to inject arbitrary web scripts in pages that will execute whenever a user accesses an injected page.","published":"2026-09-22T06:16:50.000Z","lastModified":"2026-09-22T19:04:56.000Z","status":"Deferred","sourceIdentifier":"security@wordfence.com","cvss":{"version":"3.1","score":6.4,"severity":"MEDIUM","vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:L/I:L/A:N"},"cwe":["CWE-79"],"affected":[],"epss":{"score":0.00419,"percentile":0.35933,"date":"2026-10-26","history":[{"date":"2026-09-22","score":0.00255,"percentile":0.17359}]},"kev":{"listed":false},"exploits":{"count":0,"verified":false,"firstPublished":null,"source":"Exploit-DB (https://gitlab.com/exploit-database/exploitdb)","entries":[]},"verdict":{"level":"low","text":"Lower severity and a low EPSS score (0.42%). Track it; it rarely justifies an emergency change on its own."},"changes":[{"kind":"new","label":"New CVE","at":"2026-09-22T06:16:50.000Z","detail":{"score":"6.4","severity":"MEDIUM","publishedAt":"2026-09-22T06:16:49.597Z"},"summary":"New CVE, medium severity (CVSS 6.4)."}],"references":[{"url":"https://plugins.trac.wordpress.org/browser/contextual-related-posts/tags/4.2.4/includes/frontend/blocks/class-blocks.php#L95","source":"security@wordfence.com"},{"url":"https://plugins.trac.wordpress.org/browser/contextual-related-posts/tags/4.2.4/includes/frontend/class-media-handler.php#L133","source":"security@wordfence.com"},{"url":"https://plugins.trac.wordpress.org/browser/contextual-related-posts/tags/4.2.4/includes/frontend/class-media-handler.php#L854","source":"security@wordfence.com"},{"url":"https://plugins.trac.wordpress.org/browser/contextual-related-posts/tags/4.2.4/includes/frontend/class-media-handler.php#L972","source":"security@wordfence.com"},{"url":"https://plugins.trac.wordpress.org/browser/contextual-related-posts/tags/4.4.0/includes/frontend/blocks/class-blocks.php#L95","source":"security@wordfence.com"},{"url":"https://plugins.trac.wordpress.org/browser/contextual-related-posts/tags/4.4.0/includes/frontend/class-media-handler.php#L133","source":"security@wordfence.com"},{"url":"https://plugins.trac.wordpress.org/browser/contextual-related-posts/tags/4.4.0/includes/frontend/class-media-handler.php#L854","source":"security@wordfence.com"},{"url":"https://plugins.trac.wordpress.org/browser/contextual-related-posts/tags/4.4.0/includes/frontend/class-media-handler.php#L972","source":"security@wordfence.com"},{"url":"https://plugins.trac.wordpress.org/changeset?reponame=&old=3703115%40contextual-related-posts&new=3703115%40contextual-related-posts","source":"security@wordfence.com"},{"url":"https://www.wordfence.com/threat-intel/vulnerabilities/id/1ee59a73-c449-462d-9ff0-b652be56b73b?source=cve","source":"security@wordfence.com"}],"sources":{"nvd":"https://nvd.nist.gov/vuln/detail/CVE-2026-85653","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."}