EUVD-2026-20556
CVSS Vector
CVSS:4.0/AV:N/AC:L/AT:P/PR:L/UI:P/VC:L/VI:N/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
Lifecycle Timeline
3Description
Zammad is a web based open source helpdesk/customer support system. Prior to 7.0.1, customers in shared organizations (means they can see each other's tickets) could see fields which are not intended for customers - including fields not intended for them at all (e.g. priority, custom ticket attributes for internal purposes). This was the case when a customer opened a ticket from another user of the same shared organization. They are not able to modify these field. This vulnerability is fixed in 7.0.1.
Analysis
Zammad prior to 7.0.1 improperly discloses internal ticket fields to customers within shared organizations, allowing them to view restricted fields such as priority and custom internal attributes when accessing tickets from other organization members. This information disclosure vulnerability requires customer-level authentication and user interaction to exploit, and has a very low CVSS score of 2.1 reflecting minimal confidentiality impact with no ability to modify exposed data.
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External POC / Exploit Code
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