Description
Smoothwall Express versions prior to 3.1 Update 13 contain a stored cross-site scripting vulnerability in the /cgi-bin/vpnmain.cgi script due to improper sanitation of the VPN_IP parameter. Authenticated attackers can inject arbitrary JavaScript through VPN configuration settings that executes when the affected page is viewed by other users.
Published: 2026-03-30
Score: 5.1 Medium
EPSS: < 1% Very Low
KEV: No
Impact: Stored Cross‑Site Scripting (XSS)
Action: Apply Patch
AI Analysis

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Remediation

No vendor fix or workaround currently provided.

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Tracking

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Advisories

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History

Tue, 14 Apr 2026 16:45:00 +0000

Type Values Removed Values Added
First Time appeared Smoothwall smoothwall Express
CPEs cpe:2.3:o:smoothwall:smoothwall_express:*:*:*:*:*:*:*:*
cpe:2.3:o:smoothwall:smoothwall_express:3.1:update10:*:*:-:*:*:*
cpe:2.3:o:smoothwall:smoothwall_express:3.1:update11:*:*:-:*:*:*
cpe:2.3:o:smoothwall:smoothwall_express:3.1:update12:*:*:-:*:*:*
cpe:2.3:o:smoothwall:smoothwall_express:3.1:update1:*:*:-:*:*:*
cpe:2.3:o:smoothwall:smoothwall_express:3.1:update2:*:*:-:*:*:*
cpe:2.3:o:smoothwall:smoothwall_express:3.1:update3:*:*:-:*:*:*
cpe:2.3:o:smoothwall:smoothwall_express:3.1:update4:*:*:-:*:*:*
cpe:2.3:o:smoothwall:smoothwall_express:3.1:update5:*:*:-:*:*:*
cpe:2.3:o:smoothwall:smoothwall_express:3.1:update6:*:*:-:*:*:*
cpe:2.3:o:smoothwall:smoothwall_express:3.1:update7:*:*:-:*:*:*
cpe:2.3:o:smoothwall:smoothwall_express:3.1:update8:*:*:-:*:*:*
cpe:2.3:o:smoothwall:smoothwall_express:3.1:update9:*:*:-:*:*:*
Vendors & Products Smoothwall smoothwall Express

Wed, 01 Apr 2026 02:15:00 +0000

Type Values Removed Values Added
First Time appeared Smoothwall
Smoothwall express
Vendors & Products Smoothwall
Smoothwall express

Mon, 30 Mar 2026 19:15:00 +0000

Type Values Removed Values Added
Metrics ssvc

{'options': {'Automatable': 'no', 'Exploitation': 'none', 'Technical Impact': 'partial'}, 'version': '2.0.3'}


Mon, 30 Mar 2026 17:00:00 +0000

Type Values Removed Values Added
Description Smoothwall Express versions prior to 3.1 Update 13 contain a stored cross-site scripting vulnerability in the /cgi-bin/vpnmain.cgi script due to improper sanitation of the VPN_IP parameter. Authenticated attackers can inject arbitrary JavaScript through VPN configuration settings that executes when the affected page is viewed by other users.
Title Smoothwall Express < 3.1 Update 13 Stored XSS in vpnmain.cgi via VPN_IP Parameter
Weaknesses CWE-79
References
Metrics cvssV3_1

{'score': 5.4, 'vector': 'CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N'}

cvssV4_0

{'score': 5.1, 'vector': 'CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:P/VC:N/VI:N/VA:N/SC:L/SI:L/SA:N'}


Subscriptions

Smoothwall Express Smoothwall Express
cve-icon MITRE

Status: PUBLISHED

Assigner: VulnCheck

Published:

Updated: 2026-03-30T18:09:05.294Z

Reserved: 2026-02-13T17:28:43.057Z

Link: CVE-2026-26352

cve-icon Vulnrichment

Updated: 2026-03-30T18:08:53.779Z

cve-icon NVD

Status : Analyzed

Published: 2026-03-30T17:16:14.363

Modified: 2026-04-14T16:34:30.427

Link: CVE-2026-26352

cve-icon Redhat

No data.

cve-icon OpenCVE Enrichment

Updated: 2026-04-15T16:45:09Z

Weaknesses