CVE-2026-34819

| EUVD-2026-18320 MEDIUM
2026-04-02 [email protected] GHSA-h6h2-h2qj-ww49
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-2026-18320
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/openvpnclient.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 earlier allows authenticated attackers to inject arbitrary JavaScript via the REMARK parameter in /cgi-bin/openvpnclient.cgi, with the payload persisted and executed when other users access the affected page. CVSS 5.1 reflects low immediate impact due to user interaction requirement and limited scope, but the stored nature increases attack persistence; no public exploit code or CISA KEV confirmation identified at time of analysis.

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Priority Score

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

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CVE-2026-34819 vulnerability details – vuln.today
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