CVE-2026-18366
Unauthenticated account takeover via Events Manager WordPress plugin <7.4.1
Is CVE-2026-18366 being exploited?
Not confirmed. CVE-2026-18366 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. EPSS currently estimates a 0.39% probability of exploitation in the next 30 days.
How severe is CVE-2026-18366?
CVE-2026-18366 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-2026-18366?
Yes. A fix has been recorded for CVE-2026-18366. The vendor advisory is the authority on the exact fixed version — apply it from there rather than from a summary.
What does CVE-2026-18366 affect?
CVE-2026-18366 affects Events Manager WordPress plugin < 7.4.1, WordPress sites using Events Manager plugin. Confirm the exact affected versions against the vendor advisory before deciding you are exposed.
What should I do about CVE-2026-18366?
Update Events Manager plugin to 7.4.1+ and audit admin accounts
Exploitation status reflects CISA's KEV catalog as we last synced it. Check the catalog directly.
Unauthenticated attackers can change passwords, escalate accounts to Administrator, or delete accounts when user ID matches a plugin post ID.
Immediate action required
- affected>= 7.1 and < 7.4.1
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.