PT-2026-29763 · Endian Technologies · Endian Firewall

Alex Williams + 1 · Published 2026-04-02 · Updated 2026-04-02 · CVE-2026-34803

Positive Technologies (AI Summary)

CVSS v3.1

6.4

Medium

Base vector

AV:N/AC:L/PR:L/UI:N/S:C/C:L/I:L/A:N

Name of the Vulnerable Software and Affected Versions Endian Firewall versions 3.3.25 and prior

Description Endian Firewall versions 3.3.25 and earlier are susceptible to stored cross-site scripting (XSS). An authenticated attacker can inject malicious JavaScript code through the name parameter of the '/manage/qos/classes/' endpoint. This injected code is then stored and executed when other authenticated users access the affected page.

Recommendations Update Endian Firewall to a version later than 3.3.25.

Fix

XSS

Weakness Enumeration

CWE-79

Related Identifiers

CVE-2026-34803

Affected Products

Endian Firewall

References · 4

• https://nvd.nist.gov/vuln/detail/CVE-2026-34803 · Security Note
• https://help.endian.com/hc/en-us/sections/360004371358-Community · Note
• https://twitter.com/CVEnew/status/2039744313848975616 · Twitter Post
• https://vulncheck.com/advisories/endian-firewall-manage-qos-classes-name-stored-cross-site-scripting · Note