What the vulnerability does
01Description
The EventON - WordPress Virtual Event Calendar Plugin plugin for WordPress is vulnerable to unauthorized modification of data and loss of data due to a missing capability check on the evo_eventpost_update_meta function in all versions up to, and including, 4.5.4 (for Pro) and 2.2.7 (for free). This makes it possible for unauthenticated attackers to update and remove arbitrary post metadata. Note that certain parameters may allow for content injection. CVE-2024-0238 appears to be a duplicate of this issue.
Explanation of Vulnerability in Simple Terms
02Summary
EventON – Events Calendar versions 2.2.7 and earlier lack proper authorization checks, allowing unauthenticated attackers to modify event data and disrupt calendar functionality. The vulnerability requires no user interaction and can be exploited remotely over the network. Site administrators should update to a version newer than 2.2.7 to restore access controls.
What an attacker can do
03Attacker Capabilities
Modify or delete event data without logging in, disrupting the calendar for all site visitors.
Potential impact on your site
04Site Impact
Attackers can alter or remove events, damaging site credibility and visitor experience without warning.
Conditions required to exploit
05Prerequisites
Network access only; no authentication or user interaction required.
Key dates
06Disclosure timeline
January 10, 2024
CVE published
April 8, 2026
Record updated
