Critical 9.8Published Aug 24, 2026

CVE-2026-78265WordPress The Events Calendar plugin <= 6.17.2 - PHP Object Injection vulnerability

Updated under an hour ago (2026-10-19 11:23 UTC)

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It affects Nexcess The Events Calendar. Add what you run to find out whether that includes you.

No exploitation reported and no EPSS estimate yet.

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Every CVE for Nexcess The Events Calendar

Exploited in the last 30 days

Unauthenticated PHP Object Injection in The Events Calendar <= 6.17.2 versions.

CVSS: 9.8 CRITICAL (v3.1, CNA)CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Weakness (CWE): CWE-502
Known exploited: Not in CISA's KEV catalog
EPSS (exploitation in the next 30 days): Not loaded for this CVE
Assigned by: Patchstack
NVD analysis: Deferred
Record last updated: Aug 25, 2026
First seen by InfoSec Signals: Oct 9, 2026

Affected products

Affected products

Nexcess The Events Calendar nexcess:the_events_calendar (from the name)	from n/a through 6.17.2; fixed at 6.17.3	CNA record

References

https://patchstack.com/database/wordpress/plugin/the-events-calendar/vulnerability/wordpress-the-events-calendar-plugin-6-17-2-php-object-injection-vulnerability?_s_id=cvevdb-entry

The CVE record on cve.org NVD's entry

The CVE record is authoritative. Products marked “from the name” were identified from the CNA's free-text names, not a CPE, and are matched less certainly. This product uses the NVD API but is not endorsed or certified by the NVD.