CVE-2026-26352 — MEDIUM (5.4)

Q: How severe is CVE-2026-26352?

CVE-2026-26352 has been rated MEDIUM with a CVSS base score of 5.4/10. Review the CVSS metrics above for detailed severity breakdown.

Q: Is there a patch for CVE-2026-26352?

Check the references section above for vendor advisories and patch information. Affected products include: Smoothwall Smoothwall Express.

Vulnerability 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.

CVSS Score

5.4

MEDIUM

CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N

Attack Vector

NETWORK

Attack Complexity

LOW

Privileges Required

LOW

User Interaction

REQUIRED

Scope

CHANGED

Confidentiality

LOW

Integrity

LOW

Availability

NONE

Affected Products

Vendor	Product	Versions
Smoothwall	Smoothwall Express	<= 3.0

Related Weaknesses (CWE)

CWE-79

References

https://community.smoothwall.org/forum/viewtopic.php?t=45095Release NotesProduct
https://www.vulncheck.com/advisories/smoothwall-express-stored-xss-in-vpnmain-cgThird Party Advisory

FAQ

What is CVE-2026-26352?

CVE-2026-26352 is a vulnerability with a CVSS score of 5.4 (MEDIUM). 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. Authentica...

How severe is CVE-2026-26352?

CVE-2026-26352 has been rated MEDIUM with a CVSS base score of 5.4/10. Review the CVSS metrics above for detailed severity breakdown.

Is there a patch for CVE-2026-26352?

Check the references section above for vendor advisories and patch information. Affected products include: Smoothwall Smoothwall Express.