CVE-2025-54001

CRITICAL

ThemeREX Classter <=2.5 - Deserialization

Title source: llm

Description

Deserialization of Untrusted Data vulnerability in ThemeREX Classter classter allows Object Injection.This issue affects Classter: from n/a through <= 2.5.

References (1)

[Third Party Advisory] https://patchstack.com/database/Wordpress/Theme/classter/vulnerability/wordpress-classter-theme-2-5-php-object-injection-vulnerability?_s_id=cve

Scores

CVSS v3 9.8

EPSS 0.0006

EPSS Percentile 18.0%

Attack Vector NETWORK

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

CISA SSVC

Vulnrichment

Exploitation none

Automatable yes

Technical Impact total

Details

CWE

CWE-502

Status published

Products (1)

ThemeREX/Classter < 2.5

Published Mar 05, 2026

Tracked Since Mar 05, 2026