Critical severity · published Mar 25, 2026
CVE-2026-24378
WordPress EventPrime plugin <= 4.2.8.0 - PHP Object Injection vulnerability
9.8
CVSS
0.5%
EPSS
No
On KEV
Description
Deserialization of Untrusted Data vulnerability in Metagauss EventPrime eventprime-event-calendar-management allows Object Injection.This issue affects EventPrime: from n/a through <= 4.2.8.0.
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Attack vector
Network
Complexity
Low
Privileges
None
User interaction
None
Confidentiality
High
Integrity
High
Availability
High
Scope
Unchanged
Exploitation
Is it being used?
Exploit prediction (EPSS)0.5% · higher than 45% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
EV
EventPrime · Metagauss
through 4.2.8.0 · source: vendor
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2026-24378
CVE.org
https://www.cve.org/CVERecord?id=CVE-2026-24378
patchstack.com
https://patchstack.com/database/Wordpress/Plugin/eventprime-event-calendar-management/vulnerability/wordpress-eventprime-plugin-4-2-8-0-php-object-injection-vulnerability?_s_id=cve
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