CVE-2026-56724

Zammad: Incorrect implementation of permission checks in the knowledge base module

State: Published
Severity: 7.1 High
Published: Sep 25, 2026
Updated: Sep 25, 2026
Reserved: Jun 22, 2026

Description

Zammad is a web based open source helpdesk/customer support system. Prior to 7.0.2, summary An issue with permission checks in the knowledge base management area has been identified. Under certain conditions, data validation for linked items was not fully enforced. This could have allowed users with limited read permissions to interact with items outside their assigned access scope. Data access has been strengthened in the current version through additional validation routines. This issue is fixed in version 7.0.2.

Scores

CVSS	Score	Vector	Source
4.0	7.1 High	CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N	GitHub_M

Weaknesses

CWE-639 Authorization Bypass Through User-Controlled Key
CWE-862 Missing Authorization

Affected Products

Product	Versions
zammadzammad	< 7.0.2Affected

References

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