TI-2019-15431 Aliases CVE-2019-25378 GHSA-hcvh-8pvq-9ppx

Smoothwall Express 3.1 'proxy.cgi' Cross-Site Scripting

MEDIUM 62CWE-79Published 2026-02-16 · Updated 2026-03-05

Key facts

Attack vector: Network
Privileges required: None
User interaction: Active
Attack complexity: Low
Attack requirements: None
Impact type: Cross-site scripting
Confidentiality · integrity · availability: Low · Low · None
Fix status: No fix listed

Attack profile from CVSS 4.0 · CNA. Fix status from CNA. Impact type from CWE-79.

Summary

Smoothwall Express 3.1-SP4-polar-x86_64-update9 contains multiple cross-site scripting vulnerabilities in the proxy.cgi endpoint that allow attackers to inject malicious scripts through parameters including CACHE_SIZE, MAX_SIZE, MIN_SIZE, MAX_OUTGOING_SIZE, and MAX_INCOMING_SIZE. Attackers can submit POST requests with script payloads to store or reflect arbitrary JavaScript code that executes in users' browsers when the proxy configuration page is accessed.

Why it matters now

Exploitation Proof of concept CISA SSVC · not in CISA KEV

EPSS 0.00268 19th percentileScored 2026-11-07

Public exploit Yes 1 exploit referenceTagged by the CNA and NVD

Fix No fix listed No fixed version in the sources yet

SSVC decision points

CISA ADP · SSVC 2.0.3

Exploitation: Poc
Automatable: Yes
Technical impact: Partial

The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.

Affected products

Vendor	Product	Affected versions	Fixed in	Status	Source
Smoothwall	Smoothwall Express	3.1	—	No fix listed	CNA

Smoothwall Express VendorSmoothwall Affected 3.1 Fixed in — No fix listed CNA

CPE configurations NVD · 1

CPE	Versions	Role	Vendor
cpe:2.3:o:smoothwall:smoothwall_express:3.1:sp4:::-:::*	3.1 sp4	Vulnerable	Smoothwall

cpe:2.3:o:smoothwall:smoothwall_express:3.1:sp4:*:*:-:*:*:* Versions 3.1 sp4 Vulnerable ·Smoothwall

Remediation

No fixed version listed by the sources yet.

Timeline

2026-10-02 Threatist record created from CVE-2019-25378
2026-10-03 Alias added: GHSA-hcvh-8pvq-9ppx

References

Exploit 1

ExploitDB-46333

Other 1

Smoothwall Official Vendor Homepage

TI-2019-15448 Smoothwall Express 3.1 'preferences.cgi' Cross-Site Scripting CVSS 4.0MEDIUM 5.3
TI-2019-15432 Smoothwall Express 3.1 'urlfilter.cgi' Cross-Site Scripting CVSS 4.0MEDIUM 5.3
TI-2019-15445 Smoothwall Express 3.1 'iptools.cgi' Cross-Site Scripting CVSS 4.0MEDIUM 5.1
TI-2019-15437 Smoothwall Express 3.1 'portfw.cgi' Cross-Site Scripting CVSS 4.0MEDIUM 5.1
TI-2019-15436 Smoothwall Express 3.1 'apcupsd.cgi' Cross-Site Scripting CVSS 4.0MEDIUM 5.1
TI-2019-15435 Smoothwall Express 3.1 'time.cgi' Cross-Site Scripting CVSS 4.0MEDIUM 5.1

See all 20 →

Sources

This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences