CVE-2026-27508

MEDIUM EPSS 5.0%
Published Mar 30, 20263mo ago · Modified Jun 17, 20262w ago
5.1 CVSS 4.0
Medium
Find Similar
Published Mar 30, 2026 3mo ago
Last Modified Jun 17, 2026 2w ago

Description

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.

CVSS Details

Base Score
5.1
Exploitability
—
Impact
—
Vector string
CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:A/VC:N/VI:N/VA:N/SC:L/SI:L/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X
Attack Vector Network
Attack Complexity Low
Privileges Required None
User Interaction A
Scope X

Threat Intelligence

EPSS Exploit Probability
5.0% percentile
Exploit & Patch Status
No Known Exploit
No Patch Available

Weaknesses 1

CWE-79 Cross-site Scripting Injection

Affected Products 13

VendorProductVersionRange
smoothwallsmoothwall_express* ≤3.0
smoothwallsmoothwall_express3.1any
smoothwallsmoothwall_express3.1any
smoothwallsmoothwall_express3.1any
smoothwallsmoothwall_express3.1any
smoothwallsmoothwall_express3.1any
smoothwallsmoothwall_express3.1any
smoothwallsmoothwall_express3.1any
smoothwallsmoothwall_express3.1any
smoothwallsmoothwall_express3.1any
smoothwallsmoothwall_express3.1any
smoothwallsmoothwall_express3.1any
smoothwallsmoothwall_express3.1any

References 2

  • community.smoothwall.org https://community.smoothwall.org/forum/viewtopic.php?t=45095
    ProductRelease Notes
  • vulncheck.com https://www.vulncheck.com/advisories/smoothwall-express-reflected-xss-in-redirect-cgi-via-url-parameter
    Third Party Advisory

Remediation

No remediation data recorded yet

Check vendor advisories and the NVD entry for patch availability.