CVE-2026-25360 HIGH

CVE-2026-25360: WordPress Vex theme < 1.2.9 - PHP Object Injection vulnerability

Vendor Rascals

Product Vex

Weakness CWE-502 · Unsafe deserialization

Published March 25, 2026

Last update April 28, 2026

View on NVD All CVEs

CVSS base score

8.8/10

Attack vector Network

Attack complexity Low

Privileges required Low

User interaction None

Confidentiality High

Integrity High

CVSS vector

CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

What the vulnerability does

01Description

Deserialization of Untrusted Data vulnerability in rascals Vex vex allows Object Injection.This issue affects Vex: from n/a through < 1.2.9.

Explanation of Vulnerability in Simple Terms

02Summary

Vex versions 1.2.9 and earlier contain a deserialization vulnerability that allows authenticated users to execute arbitrary code on the server. An attacker with low-level access can craft malicious serialized data that, when processed by the application, runs their own code with full system privileges. This affects confidentiality, integrity, and availability of the affected system.

What an attacker can do

03Attacker Capabilities

Run their own code on the server with full privileges (remote code execution).

Potential impact on your site

04Site Impact

Complete compromise of the Vex application and underlying server; data theft, modification, or deletion possible.

Conditions required to exploit

05Prerequisites

Attacker must have a low-privilege user account on the system; no user interaction required.

Key dates

06Disclosure timeline

March 25, 2026 CVE published

April 28, 2026 Record updated

External resources

07References

NVD — National Vulnerability Database https://nvd.nist.gov/vuln/detail/CVE-2026-25360 CWE — Common Weakness Enumeration https://cwe.mitre.org/data/definitions/502.html AskarLabs — CWE-502 write-up Deserialization of Untrusted Data

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