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CVE-2026-34723

HIGH CVSS 4.0: 8.7 EPSS 0.05%
Updated Apr 17, 2026
Zammad
Parameter Value
CVSS 8.7 (HIGH)
Affected Versions before 6.5.4
Fixed In 7.0.1
Type CWE-284 (Improper Access Control)
Vendor Zammad
Public PoC No

Zammad is a web based open source helpdesk/customer support system. Prior to 7.0.1 and 6.5.4, unauthenticated remote attackers were able to access the getting started endpoint to get access to sensitive internal entity data, even after the system setup was completed. This vulnerability is fixed in 7.0.1 and 6.5.4.

Attack Parameters

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

Impact Assessment

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

CVSS Vector v4.0

Vulnerable Products 2

Configuration From (including) Up to (excluding)
Zammad Zammad
cpe:2.3:a:zammad:zammad:*:*:*:*:*:*:*:*
6.5.4
Zammad Zammad
cpe:2.3:a:zammad:zammad:7.0.0:*:*:*:*:*:*:*

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