EUVD-2026-20562
2026-04-08
GitHub_M
6.9
CVSS 4.0
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CVSS Vector
CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:L/VI:L/VA:N/SC:N/SI:N/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
None
User Interaction
None
Scope
X
Lifecycle Timeline
3
EUVD ID Assigned
Apr 08, 2026 - 19:31 euvd
EUVD-2026-20562
Analysis Generated
Apr 08, 2026 - 19:31 vuln.today
CVE Published
Apr 08, 2026 - 18:13 nvd
MEDIUM 6.9
Description
Zammad is a web based open source helpdesk/customer support system. Prior to 7.0.1 and 6.5.4, the used endpoint for ticket creation was missing authorization if the related parameter for adding links is used. This vulnerability is fixed in 7.0.1 and 6.5.4.
Analysis
Unauthenticated attackers can bypass authorization on Zammad's ticket creation endpoint when using the link parameter, allowing unauthorized ticket creation and modification in affected versions prior to 6.5.4 and 7.0.1. This authentication bypass (CWE-862) affects all versions of Zammad before the patched releases and requires only network access with no user interaction or special complexity.
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Priority Score
34
Low
Medium
High
Critical
KEV: 0
EPSS: +0.0
CVSS: +34
POC: 0
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