Threat intelligence

SlimStat Analytics <= 5.3.3 - Unauthenticated Stored Cross-Site Scripting via 'fh' Parameter

CVE-2025-15057 · wp-slimstat

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

Vulnerability: SlimStat Analytics <= 5.3.3 - Unauthenticated Stored Cross-Site Scripting via 'fh' Parameter
Affected software: wp-slimstat(Plugin)
Affected versions: ≤ 5.3.3
Authentication: Unauthenticated
Vulnerability type: Cross-site scripting
CVE: CVE-2025-15057
Published: 8 January 2026
CISA KEV: Not listed in CISA KEV at last catalog refresh
Impact: May allow attackers to run scripts in visitors' browsers or hijack admin sessions.
Source: Data imported from Wordfence Intelligence (advisory 90920df9-1362-466b-b14b-4714087f556b). Methodology and redistribution notes

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