{"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": "2026-10-19T16:35:59.949Z"}, "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"}]}}}

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