Vulnerability Details CVE-2026-27508
Smoothwall Express versions prior to 3.1 Update 13 contain a reflected cross-site scripting vulnerability in the /redirect.cgi endpoint due to improper sanitation of the url parameter. Attackers can craft malicious URLs with javascript: schemes that execute arbitrary JavaScript in victims' browsers when clicked through the unsanitized link.
Exploit prediction scoring system (EPSS) score
EPSS Score 0.0
EPSS Ranking 8.9%
CVSS Severity
CVSS v3 Score 5.4
References
Products affected by CVE-2026-27508
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cpe:2.3:o:smoothwall:smoothwall_express:3.0
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cpe:2.3:o:smoothwall:smoothwall_express:3.1