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 t…

Code

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Timeline

Detection, updates, and resolution for this record.

1. Mar 30, 2026 · NIST NVD

   Detected

   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.

2. Jun 17, 2026 · NIST NVD

   Updated

   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.

Affected

• cpe smoothwall/smoothwall expressversion unspecified
• cpe smoothwall/smoothwall express3.1

Sources

• CVE.orgVulnerability recordCVE-2026-27508

  Official CVE identifier

  cve.org
• NIST NVDVulnerability recordCVE-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 i

  nvd.nist.gov

References

• Product · community.smoothwall.org
• Third Party Advisory · vulncheck.com