{"dataType":"CVE_RECORD","dataVersion":"5.2","cveMetadata":{"cveId":"CVE-2026-111862","assignerOrgId":"b15e7b5b-3da4-40ae-a43c-f7aa60e62599","state":"PUBLISHED","assignerShortName":"Wordfence","dateReserved":"2026-10-17T02:00:53.250Z","datePublished":"2026-10-19T16:35:59.949Z","dateUpdated":"2026-10-20T14:10:31.918Z"},"containers":{"cna":{"providerMetadata":{"orgId":"b15e7b5b-3da4-40ae-a43c-f7aa60e62599","shortName":"Wordfence","dateUpdated":"2026-10-19T16:35:59.949Z"},"affected":[{"vendor":"RankMath","product":"Rank Math SEO PRO","versions":[{"version":"3.0.123","status":"affected"}],"defaultStatus":"unaffected"}],"descriptions":[{"lang":"en","value":"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."}],"title":"Rank Math SEO PRO 3.0.123 - Unauthenticated Embedded Malicious Code","references":[{"url":"https://www.wordfence.com/threat-intel/vulnerabilities/id/81cd7a2c-ad0c-4dbc-b5dc-07ec866d5c1f?source=cve"},{"url":"https://rankmath.com/kb/pro-3-0-123-security-incident/"},{"url":"https://rankmath.com/changelog/"},{"url":"https://urlscan.io/result/01a145c2-8dc8-72ff-a65d-21209ca29c4f/"},{"url":"https://rdap.verisign.com/com/v1/domain/rank1cdn.com"}],"problemTypes":[{"descriptions":[{"lang":"en","description":"CWE-506 Embedded Malicious Code","cweId":"CWE-506","type":"CWE"}]}],"metrics":[{"cvssV3_1":{"version":"3.1","vectorString":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H","baseScore":9.8,"baseSeverity":"CRITICAL"}}],"timeline":[{"time":"2026-10-15T00:00:00.000Z","lang":"en","value":"Discovered"},{"time":"2026-10-16T00:00:00.000Z","lang":"en","value":"Disclosed"}]},"adp":[{"metrics":[{"other":{"type":"ssvc","content":{"timestamp":"2026-10-20T14:10:17.459613Z","id":"CVE-2026-111862","options":[{"Exploitation":"none"},{"Automatable":"yes"},{"Technical Impact":"total"}],"role":"CISA Coordinator","version":"2.0.3"}}}],"title":"CISA ADP Vulnrichment","providerMetadata":{"orgId":"134c704f-9b21-4f2e-91b3-4a467353bcc0","shortName":"CISA-ADP","dateUpdated":"2026-10-20T14:10:31.918Z"}}]}}