EUVD-2026-18300

| CVE-2026-34809 MEDIUM
2026-04-02 [email protected] GHSA-pwj2-g679-jwhx
5.1
CVSS 4.0
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CVSS 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/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X
Attack Vector
Network
Attack Complexity
Low
Privileges Required
Low
User Interaction
P
Scope
X

Lifecycle Timeline

3
Analysis Generated
Apr 02, 2026 - 15:22 vuln.today
EUVD ID Assigned
Apr 02, 2026 - 15:22 euvd
EUVD-2026-18300
CVE Published
Apr 02, 2026 - 15:16 nvd
MEDIUM 5.1

Tags

XSS

Description

Endian Firewall version 3.3.25 and prior allow stored cross-site scripting (XSS) via the remark parameter to /cgi-bin/zonefw.cgi. An authenticated attacker can inject arbitrary JavaScript that is stored and executed when other users view the affected page.

Analysis

Stored cross-site scripting in Endian Firewall 3.3.25 and prior allows authenticated attackers to inject malicious JavaScript via the remark parameter in /cgi-bin/zonefw.cgi, which persists and executes when other administrators or users access the affected configuration page. The vulnerability requires user interaction (UI:P) and authenticated access (PR:L), limiting immediate risk but enabling account compromise and lateral movement within firewall administrative interfaces.

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Priority Score

26
Low Medium High Critical
KEV: 0
EPSS: +0.0
CVSS: +26
POC: 0

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EUVD-2026-18300 vulnerability details – vuln.today
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