CVE-2025-54001

CRITICAL 9.8CVE-2025-54001 · Published 05/03/2026 · updated 17/06/2026

In short

CVE-2025-54001 is a CRITICAL (CVSS 9.8) vulnerability.
Chance of exploitation in the next 30 days (EPSS): 0.61%, higher than 49.0% of all vulnerabilities.
No patched version is listed yet: follow the vendor's advisory in References.

Package	Affected versions	Patched versions
—	No affected product versions are listed for this vulnerability yet.

Description

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

References

patchstack.com/database/Wordpress/Theme/classter/vulnerability/wordpress-classter-theme-2-5-php-object-injection-vulnerability

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