{"id":"CVE-2026-111862","revision":null,"records":[{"revision":"a7856a802f8342649e57315e39ec6bea","observedAt":"2026-10-23T15:48:27.903+00:00","statement":{"source":"cve-program","id":"CVE-2026-111862","aliases":[],"title":"Rank Math SEO PRO 3.0.123 - Unauthenticated Embedded Malicious Code","description":"Rank Math SEO PRO for WordPress is affected by a supply-chain compromise in a subset of version 3.0.123 packages downloaded or updated between October 15, 2026 at 20:02 UTC and October 16, 2026 at 07:12 UTC. Rank Math states that the affected plugin files contained malware that could compromise a website if the plugin was activated and directs sites that activated an affected package to treat the website as compromised. The malware may establish persistent access, communicate with rank1cdn[.]com, recreate hidden backdoors on page visits, and expose WordPress credentials, database credentials, API keys, and other secrets accessible to the web server. Rank Math identifies three malicious wp_options keys, hidden PHP backdoors, unauthorized administrator accounts, a fake WordPress core file, PHP-executable .cache files, and a system cron marker as incident indicators. Only packages obtained during the vendor-confirmed window are claimed as affected; version 3.0.123 alone is not sufficient to establish compromise. Rank Math removed the affected files and released version 3.0.124 as the clean replacement.","state":0,"publishedAt":"2026-10-19T16:35:59.949+00:00","modifiedAt":"2026-10-20T14:10:31.918+00:00","affected":[{"ecosystem":"Vendor product","name":"Rank Math SEO PRO","ranges":[],"versions":[],"rawVersionEvidence":"{\n                    \"vendor\": \"RankMath\",\n                    \"product\": \"Rank Math SEO PRO\",\n                    \"versions\": [\n                        {\n                            \"version\": \"3.0.123\",\n                            \"status\": \"affected\"\n                        }\n                    ],\n                    \"defaultStatus\": \"unaffected\"\n                }"}],"metrics":[{"system":"CVSS 3.1","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H","score":9.8,"severity":"CRITICAL"}],"references":["https://www.wordfence.com/threat-intel/vulnerabilities/id/81cd7a2c-ad0c-4dbc-b5dc-07ec866d5c1f?source=cve","https://rankmath.com/kb/pro-3-0-123-security-incident/","https://rankmath.com/changelog/","https://urlscan.io/result/01a145c2-8dc8-72ff-a65d-21209ca29c4f/","https://rdap.verisign.com/com/v1/domain/rank1cdn.com"],"sourceUrl":"https://www.cve.org/CVERecord?id=CVE-2026-111862","license":"CVE Program Terms of Use","key":"cve-program:CVE-2026-111862","identifiers":["CVE-2026-111862"]},"retained":false,"historicalAffected":[]}],"coverage":[{"source":"cisa-kev:global","scope":"Complete CISA KEV catalog; all vendors. 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