Threat intelligence

Classter <= 2.5 - Unauthenticated PHP Object Injection

CVE-2025-54001 · classter

Important: Seeing this vulnerability listed does not mean your website is affected. Exposure depends on whether you run Classter at a vulnerable version. How SiteRespond intelligence works

Vulnerability: Classter <= 2.5 - Unauthenticated PHP Object Injection
Affected software: classter(Theme)
Affected versions: ≤ 2.5
Authentication: Unauthenticated
Vulnerability type: Other
CVE: CVE-2025-54001
Published: 3 March 2026
CISA KEV: Not listed in CISA KEV at last catalog refresh
Impact: This advisory describes a other issue in the affected software. Review the source advisory and your installed version to assess exposure.
Source: Data imported from Wordfence Intelligence (advisory eec46e0b-806a-4c34-adb8-a2bdb08a7a93). Methodology and redistribution notes

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