PT-2026-29062 · Smoothwall · Express

Alex Williams + 1 · Published 2026-03-30 · Updated 2026-03-30 · CVE-2026-27508

Mitre

CVSS v3.1

5.4

Medium

AV:N/AC:L/PR:N/UI:R/S:U/C:L/I:L/A:N

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.

Fix

XSS

Weakness Enumeration

CWE-79

Related Identifiers

CVE-2026-27508

Affected Products

Express

References · 3

• https://nvd.nist.gov/vuln/detail/CVE-2026-27508 · Security Note
• https://vulncheck.com/advisories/smoothwall-express-reflected-xss-in-redirect-cgi-via-url-parameter · Note
• https://community.smoothwall.org/forum/viewtopic.php?t=45095 · Patch, Vendor Advisory