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9.8

WordPress Participants Database plugin lets attackers run code

CVE-2026-112862 · published 1 day ago
Summary

The Participants Database plugin for WordPress can be fooled into handling crafted data that causes the server to execute unwanted code. This could let an attacker take control of the website or steal information. Update the plugin to the latest release or uninstall it if you cannot apply the update.

What to do

The CVE record does not list a fixed version. Check the vendor's site or the advisory links below - a fix may already be released.

Affected software
VendorProductAffected versions
xnau webdesign participants database <= 2.7.8.5
Original advisory text
WordPress Participants Database plugin <= 2.7.8.5 - PHP Object Injection vulnerability
Deserialization of Untrusted Data vulnerability in xnau webdesign Participants Database participants-database allows Object Injection.This issue affects Participants Database: from n/a through 2.7.8.5.
References
Fix within
Internet-facing 3 days
Internal 60 days
  • Not known to be exploited
  • Can be exploited automatically
  • Gives an attacker full control
Severity
9.8 Critical
Exploitation
<1% chance of attack within 30 days
Type
CWE-502Deserialization of Untrusted Data
Timeline
Published23 Oct 2026
Updated24 Oct 2026
First seen23 Oct 2026
Sources
CVE-2026-112862 · NVD
CVE-2026-112862 · MITRE
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