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CVE-2026-34817

MEDIUM CVSS 4.0: 5.1 EPSS 0.03%
Updated Apr 06, 2026
Endian
Parameter Value
CVSS 5.1 (MEDIUM)
Affected Versions before 3.3.25
Type CWE-79 (Cross-Site Scripting (XSS))
Vendor Endian
Public PoC No

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

Attack Parameters

Attack Vector
Network
Can be exploited remotely
Attack Complexity
Low
Easy to exploit
Attack Requirements
None
No additional conditions
Privileges Required
Low
Basic privileges needed
User Interaction
Passive
Minimal interaction

Impact Assessment

Confidentiality
None
No data leak
Integrity
None
No data modification
Availability
None
No disruption

CVSS Vector v4.0

Vulnerable Products 1

Configuration From (including) Up to (excluding)
Endian Firewall_Community
cpe:2.3:a:endian:firewall_community:*:*:*:*:*:*:*:*
<= 3.3.25