CVE-2026-34821

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

CVSS v3 6.4 MEDIUM

6.4^/10

CVSS v3 : MEDIUM

Vector :

Exploitability : 3.1 / Impact : 2.7

Attack Vector NETWORK

Attack Complexity LOW

Privileges Required LOW

User Interaction NONE

Confidentiality Impact LOW

Integrity Impact LOW

Availability Impact NONE

Scope CHANGED

References

Link	Resource
https://help.endian.com/hc/en-us/sections/360004371358-Community	Release Notes
https://www.vulncheck.com/advisories/endian-firewall-manage-vpnauthentication-user-remark-stored-cross-site-scripting	Third Party Advisory

Configurations

Configuration 1 (hide)

cpe:2.3:a:endian:firewall_community:*:*:*:*:*:*:*:*

History

07 Apr 2026, 14:10

Type	Values Removed	Values Added
References	~~() https://help.endian.com/hc/en-us/sections/360004371358-Community -~~	() https://help.endian.com/hc/en-us/sections/360004371358-Community - Release Notes
References	~~() https://www.vulncheck.com/advisories/endian-firewall-manage-vpnauthentication-user-remark-stored-cross-site-scripting -~~	() https://www.vulncheck.com/advisories/endian-firewall-manage-vpnauthentication-user-remark-stored-cross-site-scripting - Third Party Advisory
First Time		Endian Endian firewall Community
CPE		cpe:2.3:a:endian:firewall_community::::::::

02 Apr 2026, 15:16

Type	Values Removed	Values Added
New CVE

Information

Published : 2026-04-02 15:16

Updated : 2026-04-07 14:10

NVD link : CVE-2026-34821

Mitre link : CVE-2026-34821

CVE.ORG link : CVE-2026-34821

JSON object : View

Products Affected

endian

firewall_community

CWE

CWE-79

Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')

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