HTML Injection Vulnerability in Zammad Helpdesk System
CVE-2026-56732

5.3MEDIUM

Key Information:

Vendor

Zammad

Status
Zammad
Vendor
CVE Published:
25 September 2026

What is CVE-2026-56732?

Zammad, an open-source helpdesk solution, has a vulnerability in its HTML sanitization process. This flaw allows attackers to insert specific HTML elements into ticket bodies. When a user views the manipulated ticket, it can cause a logout request to be triggered, ending the user's session unexpectedly. This issue has been addressed in version 7.0.2, emphasizing the importance of updating the software to maintain security.

Affected Version(s)

zammad < 7.0.2

References

https://github.com/zammad/zammad/security/advisories/GHSA...
x_refsource_CONFIRM
https://github.com/zammad/zammad/commit/3f6e8a5fa34eb0ce4...
x_refsource_MISC
https://github.com/zammad/zammad/releases/tag/7.0.2
x_refsource_MISC

CVSS V4

Score:
5.3
Severity:
MEDIUM
Confidentiality:
None
Integrity:
None
Availability:
Low
Attack Vector:
Network
Attack Complexity:
Low
Attack Required:
None
Privileges Required:
Undefined
User Interaction:
Unknown

Timeline

  • Vulnerability published

  • Vulnerability Reserved

.