Supply-chain malware in a widely used WordPress plugin can compromise many sites, exfiltrate secrets and provide persistent remote control — broad impact across web properties.
CVE-2026-111862
Supply-chain malware in Rank Math SEO PRO packages backdoors sites and steals credentials.
Is CVE-2026-111862 being exploited?
Not confirmed. CVE-2026-111862 does not appear in CISA's Known Exploited Vulnerabilities catalog, which records only exploitation that has been observed and reported publicly. That is evidence of absence of a report, not evidence the flaw is unattacked.
How severe is CVE-2026-111862?
CVE-2026-111862 is rated Critical with a CVSS score of 9.8. Severity describes how bad exploitation would be, not how likely it is: pair it with exploitation evidence before deciding what to patch first.
Is there a patch for CVE-2026-111862?
Yes. A fix has been recorded for CVE-2026-111862. The vendor advisory is the authority on the exact fixed version — apply it from there rather than from a summary.
What does CVE-2026-111862 affect?
CVE-2026-111862 affects Rank Math SEO PRO (packages downloaded 2026-10-15 20:02 UTC to 2026-10-16 07:12 UTC), WordPress sites with affected package activated. Confirm the exact affected versions against the vendor advisory before deciding you are exposed.
What should I do about CVE-2026-111862?
Update to 3.0.124; if installed during window treat site as compromised, restore/scan and rotate all creds.
Exploitation status reflects CISA's KEV catalog as we last synced it. Check the catalog directly.
Malware installs persistent backdoors, creates admin accounts, exfiltrates WordPress/DB/API credentials and enables remote control of sites.
Immediate action required
- affected3.0.123
As published in the CVE Program record. A version outside these ranges is not a statement that it is unaffected — vendors sometimes understate a range, and distribution-backported builds carry upstream numbers that do not reflect what was patched into them.