Gutentype Plugin Deserialization CVE-2026-62046 Scores 9.8 CVSS Through v2.1.12

The National Vulnerability Database published CVE-2026-62046 on the current advisory cycle, identifying a critical security flaw in the ThemeREX Group Gutentype plugin. The vulnerability involves the deserialization of untrusted data, which permits object injection attacks against affected WordPress installations. Security teams should treat this issue as a high-priority risk for any site running the plugin.

The risk

The National Vulnerability Database rates CVE-2026-62046 with a CVSS score of 9.8, classifying it as critical. The underlying weakness is identified as CWE-502, which covers the deserialization of untrusted data. This specific flaw allows attackers to inject objects into the application process, potentially leading to remote code execution or other severe system compromises.

Who is exposed

The vulnerability affects all versions of the ThemeREX Group Gutentype plugin from its initial release through version 2.1.12. According to the NVD record, there is no lower bound specified, meaning every iteration of the plugin up to 2.1.12 is vulnerable. Organizations using this plugin for WordPress theme customization are directly exposed to the object injection risk.

Cost and compliance

The source material does not provide specific details regarding financial costs, regulatory fines, or compliance impacts associated with CVE-2026-62046. The National Vulnerability Database record focuses solely on the technical classification, severity score, and affected software versions. No incident reports or breach statistics are included in the current advisory data.

What to watch

Security managers should immediately audit their WordPress installations for the presence of the Gutentype plugin. Teams need to verify the installed version against the vulnerable range up to 2.1.12. Monitoring server logs for unusual deserialization activity or unexpected object creation can help detect exploitation attempts while a remediation path is determined.

What to do and how to stay safe: ThemeREX

• Inventory all WordPress plugins and identify any installations of the ThemeREX Gutentype plugin.
• Check the current version of the Gutentype plugin to see if it is 2.1.12 or older.
• Temporarily disable the plugin if no patched version is available from the vendor.
• Monitor server access logs for signs of object injection or unauthorized data deserialization.

Step-by-step guide: Vulnerability Prioritization: Fix What Actually Matters First

General security guidance from the SecOps Signal newsroom. It is not confirmed advice from the organisations named in this story.

Frequently asked questions

What is the CVE ID for the Gutentype plugin vulnerability?

The vulnerability is identified as CVE-2026-62046 in the National Vulnerability Database.

Which versions of the Gutentype plugin are affected by this flaw?

All versions of the ThemeREX Group Gutentype plugin from its release through version 2.1.12 are affected.

What is the severity rating of CVE-2026-62046?

The National Vulnerability Database rates the vulnerability as critical with a CVSS score of 9.8.