CVE-2026-56726
Zammad: Missing authorization check in GitHub + GitLab integration allows cross-ticket data leak
CVSS Score
0.0
EPSS Score
0.0%
EPSS Percentile
0th
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.
| CWE | CWE-862 |
| Vendor | zammad |
| Product | zammad |
| Published | Sep 25, 2026 |
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Affected Versions
zammad / zammad
< 7.0.2
References
github.com: https://github.com/zammad/zammad/security/advisories/GHSA-96hh-fmj3-h4hp github.com: https://github.com/zammad/zammad/commit/c767f32c006ff9842152f78e12f355f7f485304f github.com: https://github.com/zammad/zammad/commit/e50ef69beab897317caa5e9490edba33aa1ac978 github.com: https://github.com/zammad/zammad/releases/tag/7.0.2