Medium 5.1Published Sep 25, 2026

CVE-2026-56726Zammad: Missing authorization check in GitHub + GitLab integration allows cross-ticket data leak

Updated under an hour ago (2026-10-19 05:50 UTC)

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No exploitation reported and no EPSS estimate yet.

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Every CVE for zammad

Exploited in the last 30 days

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.

CVSS: 5.1 MEDIUM (v4.0, CNA)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
Weakness (CWE): CWE-862
Known exploited: Not in CISA's KEV catalog
EPSS (exploitation in the next 30 days): Not loaded for this CVE
Assigned by: GitHub_M
NVD analysis: Deferred
Record last updated: Sep 25, 2026
First seen by InfoSec Signals: Oct 9, 2026

Affected products

Affected products

zammad zammad zammad:zammad (from the name)	before 7.0.2	CNA record

References

https://github.com/zammad/zammad/security/advisories/GHSA-96hh-fmj3-h4hpx-refsource-confirm
https://github.com/zammad/zammad/commit/c767f32c006ff9842152f78e12f355f7f485304fx-refsource-misc
https://github.com/zammad/zammad/commit/e50ef69beab897317caa5e9490edba33aa1ac978x-refsource-misc
https://github.com/zammad/zammad/releases/tag/7.0.2x-refsource-misc

The CVE record on cve.org NVD's entry

The CVE record is authoritative. Products marked “from the name” were identified from the CNA's free-text names, not a CPE, and are matched less certainly. This product uses the NVD API but is not endorsed or certified by the NVD.