CVE-2025-67996 CRITICAL

CVE-2025-67996: WordPress Nestin theme < 1.2.6 - PHP Object Injection vulnerability

Vendor Boldthemes
Product Nestin
Weakness CWE-502 · Unsafe deserialization
Published February 20, 2026
Last update April 28, 2026
View on NVD All CVEs

CVSS base score

9.8/10
Attack vector Network
Attack complexity Low
Privileges required None
User interaction None
Confidentiality High
Integrity High

CVSS vector

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

What the vulnerability does

01Description

Deserialization of Untrusted Data vulnerability in BoldThemes Nestin nestin allows Object Injection.This issue affects Nestin: from n/a through < 1.2.6.

Explanation of Vulnerability in Simple Terms

02Summary

Nestin versions up to 1.2.6 contain a deserialization vulnerability that allows unauthenticated attackers to run arbitrary code on the site. The vulnerability exists in how the product processes untrusted serialized data without proper validation. No user interaction is required; an attacker can exploit this remotely over the network.

What an attacker can do

03Attacker Capabilities

Run arbitrary code on the site and take complete control of it.

Potential impact on your site

04Site Impact

Complete compromise of the site, including data theft, malware injection, and site defacement.

Conditions required to exploit

05Prerequisites

Network access only; no authentication or user interaction required.

Key dates

06Disclosure timeline

February 20, 2026 CVE published
April 28, 2026 Record updated