CVE-2026-56726

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-862

• https://github.com/zammad/zammad/commit/c767f32c006ff9842152f78e12f355f7f485304f
• https://github.com/zammad/zammad/commit/e50ef69beab897317caa5e9490edba33aa1ac978
• https://github.com/zammad/zammad/releases/tag/7.0.2
• https://github.com/zammad/zammad/security/advisories/GHSA-96hh-fmj3-h4hp

Published

Sep 25, 2026

Last Modified

Sep 25, 2026

Status

Received

• Uncovering a hidden BOLA in Appsmith's snapshot logicStrix autonomously discovered a BOLA/IDOR vulnerability in Appsmith's snapshot deletion path.
• Autonomous PentestingAI agents that find and validate exploitable vulnerabilities like this one across your applications.
• PR ReviewsPentest every pull request so vulnerable code is caught before it ships to production.
• AI Penetration TestingHow AI-driven penetration testing continuously covers your attack surface.

• CVE-2026-56720CamaleonCMS version 2.9.2 and earlier contains a missing aut…4.3
• CVE-2026-56721CamaleonCMS version 2.9.2 and earlier contains a privilege e…8.8
• CVE-2026-56722Dompdf is an HTML to PDF converter for PHP. In versions 3.15…5.3
• CVE-2026-56723Zammad is a web based open source helpdesk/customer support …7.1
• CVE-2026-56724Zammad is a web based open source helpdesk/customer support …7.1
• CVE-2026-56725Zammad is a web based open source helpdesk/customer support …8.7
• CVE-2026-56727Zammad is a web based open source helpdesk/customer support …7.1
• CVE-2026-56728Zammad is a web based open source helpdesk/customer support …5.3
• CVE-2026-56729Zammad is a web based open source helpdesk/customer support …2.1
• CVE-2026-5673A flaw was found in libtheora. This heap-based out-of-bounds…7.1
• CVE-2026-56730Zammad is a web based open source helpdesk/customer support …2.1
• CVE-2026-56731Zammad is a web based open source helpdesk/customer support …8.4