CVE-2025-39485CWE-502

WordPress GrandTour theme <= 5.6 - PHP Object Injection vulnerability

Critical · published May 23, 2025

CVSS v3.1
9.8
EPSS
1%
Percentile
48.9
In the wild
Unconfirmed
What it is

🚨 A dangerous object injection vulnerability lurks in ThemeGoods Grand Tour, risking your entire site! 🔥 Think of it like a restaurant kitchen that accepts any random ingredient without checking it — one bad apple can spoil the whole dish! An attacker could slip in malicious code that runs with the server's privileges. This vulnerability allows an attacker to manipulate objects on your server, potentially gaining control over your application. Imagine them rerouting your website's data and executing unwanted commands — absolutely devastating! If exploited, it could lead to significant data breaches or full server compromise.

Put simply

Think of it like a restaurant kitchen that accepts any random ingredient without checking it — one bad apple can spoil the whole dish! An attacker could slip in malicious code that runs with the server's privileges. The deserialization of untrusted data allows attackers to inject harmful objects into the application. This flaw affects Grand Tour versions from n/a through 5.6, making it a critical risk for users.

What to do

This vulnerability allows an attacker to manipulate objects on your server, potentially gaining control over your application. Imagine them rerouting your website's data and executing unwanted commands — absolutely devastating! If exploited, it could lead to significant data breaches or full server compromise. To safeguard your site, upgrade to the latest version of Grand Tour immediately. Ensure you validate and sanitize all user inputs to prevent this kind of injection. Regularly audit your application for vulnerabilities to stay one step ahead! You've got this! With these steps, your site will be fortified in no time! 🛡️

The record
Technical detail
CVSS v3.1
9.8 · CRITICAL
Vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
CVSS v4.0
Not supplied
EPSS
0.00616 · 48.9th percentile
Weakness
CWE-502 · Deserialization of Untrusted Data
Published
2025-05-23T12:43Z
EPSS history
Timeline
  • 23 MAY 12:43Z
    WordPress GrandTour theme <= 5.6 - PHP Object Injection vulnerability
    cvelistv5