CVE-2026-27508Smoothwall Express < 3.1 Update 13 Reflected XSS in redirect.cgi via url Parameter
Updated under an hour ago ()
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It affects Smoothwall Express and 1 other product. Add what you run to find out whether that includes you.
No exploitation reported and no EPSS estimate yet.
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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
- 5.4 MEDIUM (v3.1, CNA)CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:L/I:L/A:N
- Weakness (CWE)
- CWE-79
- Known exploited
- Not in CISA's KEV catalog
- EPSS (exploitation in the next 30 days)
- Not loaded for this CVE
- Assigned by
- VulnCheck
- NVD analysis
- Analyzed
- Record last updated
- Jul 27, 2026
- First seen by InfoSec Signals
- Oct 9, 2026
Affected products
Smoothwall Express smoothwall:express (from the name) | before 3.1 Update 13 | CNA record |
smoothwall smoothwall_express smoothwall:smoothwall_express | through 3.0; 3.1; 3.1; 3.1; 3.1; 3.1; 3.1; 3.1; and 5 more ranges | NVD |
References
- https://community.smoothwall.org/forum/viewtopic.php?t=45095vendor-advisory, patch, product, release-notes
- https://www.vulncheck.com/advisories/smoothwall-express-reflected-xss-in-redirect-cgi-via-url-parameterthird-party-advisory
The CVE record on cve.org NVD's entry
The CVE record is authoritative. Products marked “from the name” were identified from the CNA's free-text names, not a CPE, and are matched less certainly. This product uses the NVD API but is not endorsed or certified by the NVD.