CVE-2026-23544 HIGH

CVE-2026-23544: WordPress Valenti theme <= 5.6.3.5 - PHP Object Injection vulnerability

Vendor Codetipi
Product Valenti
Weakness CWE-502 · Unsafe deserialization
Published February 19, 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 codetipi Valenti valenti allows Object Injection.This issue affects Valenti: from n/a through <= 5.6.3.5.

Explanation of Vulnerability in Simple Terms

02Summary

Valenti versions up to 5.6.3.5 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 entire site.

What an attacker can do

03Attacker Capabilities

Run arbitrary code on the server with full system access.

Potential impact on your site

04Site Impact

Complete compromise of the site and server; attacker can steal data, modify content, or take the site offline.

Conditions required to exploit

05Prerequisites

Attacker must have a low-level user account or authenticated session on the site.

Key dates

06Disclosure timeline

February 19, 2026 CVE published
April 28, 2026 Record updated