Description
Smoothwall Express 3.1-SP4-polar-x86_64-update9 contains multiple reflected cross-site scripting vulnerabilities in the apcupsd.cgi script that allow attackers to inject malicious scripts through multiple POST parameters. Attackers can submit crafted POST requests with script payloads in parameters like BATTLEVEL, RTMIN, BATTDELAY, TO, ANNOY, UPSIP, UPSNAME, UPSPORT, POLLTIME, UPSUSER, NISPORT, UPSAUTH, EMAIL, FROM, CC, SMSEMAIL, SMTPSERVER, PORT, USER, and EMAIL_PASSWORD to execute arbitrary JavaScript in victim browsers.
Exploits (1)
References (3)
Core 3
Core References
Exploit, Third Party Advisory exploit
https://www.exploit-db.com/exploits/46333
Various Sources product
http://www.smoothwall.org
Third Party Advisory third-party-advisory
https://www.vulncheck.com/advisories/smoothwall-express-apcupsdcgi-cross-site-scripting
Scores
CVSS v3
6.1
EPSS
0.0004
EPSS Percentile
12.8%
Attack Vector
NETWORK
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N
CISA SSVC
Vulnrichment
Exploitation
poc
Automatable
yes
Technical Impact
partial
Details
CWE
CWE-79
Status
published
Products (1)
smoothwall/smoothwall_express
3.1 sp4
Published
Feb 16, 2026
Tracked Since
Feb 18, 2026