Zammad is a web based open source helpdesk/customer support system. Prior to 7.0.2, this vulnerability breaks normal ticket isolation boundaries between agents. Any authenticated agent, even one with no active tickets assigned to them, can view the titles, status, labels, and URL links of GitHub/GitLab issues attached to any ticket in the system. This allows an internal user to systematically view GitHub/GitLab issue data linked by other agents or administrators across the organization by simply querying random or sequential ticket IDs. This vulnerability is fixed in 7.0.2.

Attack Vector Network

Attack Complexity Low

Privileges Required Low

Attack Requirements None

User Interaction Passive

Vulnerable System Confidentiality Impact Low

Vulnerable System Integrity Impact None

Vulnerable System Availability Impact None

Subsequent System Confidentiality Impact None

Subsequent System Integrity Impact None

Subsequent System Availability Impact None

No CVSS v3.1

No CVSS v3.0

No CVSS v2

This CVE is not in the KEV list.

No EPSS score available.

Exploitation none

Automatable no

Technical Impact partial

Default status is the baseline for the product, each version can override it (e.g. patched versions marked unaffected).

Vendor Product Default status Versions
zammad zammad affected
Version Status Constraints
< 7.0.2 affected —

No data.

No data.

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No data.

Project Subscriptions

No data.

Advisories

No advisories yet.

Fixes

Solution

No solution given by the vendor.

Workaround

No workaround given by the vendor.

References
Link Providers
https://github.com/zammad/zammad/commit/c767f32c006ff9842152f78e12f355f7f485304f cve-icon cve-icon
https://github.com/zammad/zammad/commit/e50ef69beab897317caa5e9490edba33aa1ac978 cve-icon cve-icon
https://github.com/zammad/zammad/releases/tag/7.0.2 cve-icon cve-icon
https://github.com/zammad/zammad/security/advisories/GHSA-96hh-fmj3-h4hp cve-icon cve-icon
History

Fri, 25 Sep 2026 21:30:00 +0000

Type Values Removed Values Added
Metrics ssvc

{'options': {'Automatable': 'no', 'Exploitation': 'none', 'Technical Impact': 'partial'}, 'version': '2.0.3'}

Fri, 25 Sep 2026 17:30:00 +0000

Type Values Removed Values Added
Description Zammad is a web based open source helpdesk/customer support system. Prior to 7.0.2, this vulnerability breaks normal ticket isolation boundaries between agents. Any authenticated agent, even one with no active tickets assigned to them, can view the titles, status, labels, and URL links of GitHub/GitLab issues attached to any ticket in the system. This allows an internal user to systematically view GitHub/GitLab issue data linked by other agents or administrators across the organization by simply querying random or sequential ticket IDs. This vulnerability is fixed in 7.0.2.
Title Zammad: Missing authorization check in GitHub + GitLab integration allows cross-ticket data leak
Weaknesses CWE-862
References
Metrics cvssV4_0

{'score': 5.1, 'vector': 'CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:P/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N'}

Projects

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cve-icon MITRE

Status: PUBLISHED

Assigner: GitHub_M

Published:

Updated: 2026-09-25T19:44:08.495Z

Reserved: 2026-06-22T19:17:28.958Z

Link: CVE-2026-56726

cve-icon Vulnrichment

Updated: 2026-09-25T19:44:03.044Z

cve-icon NVD

Status : Received

Published: 2026-09-25T18:17:26.480

Modified: 2026-09-25T20:17:08.780

Link: CVE-2026-56726

cve-icon Redhat

No data.

cve-icon OpenCVE Enrichment

Updated: 2026-09-25T21:15:14Z

Weaknesses