CVE-2026-25400 HIGH

CVE-2026-25400: WordPress Apicona theme <= 24.1.0 - PHP Object Injection vulnerability

Vendor Thememount

Product Apicona

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 thememount Apicona apicona allows Object Injection.This issue affects Apicona: from n/a through <= 24.1.0.

Explanation of Vulnerability in Simple Terms

02Summary

Apicona versions up to 24.1.0 contain a deserialization vulnerability that allows authenticated users to execute arbitrary code on the site. An attacker with low-level access can craft malicious serialized data to trigger code execution without user interaction. This affects confidentiality, integrity, and availability of the entire site.

What an attacker can do

03Attacker Capabilities

Run their own code on the site with full system privileges.

Potential impact on your site

04Site Impact

Compromised site with potential data theft, malware injection, and complete loss of control.

Conditions required to exploit

05Prerequisites

Attacker must have a low-privilege user account (e.g., subscriber or contributor role).

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-2026-25400 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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