CVE-2026-34722 Zammad is missing authorization in ticket create endpoint

What is CVE-2026-34722?

CVE-2026-34722 is a medium-severity missing authorization vulnerability in Zammad Zammad, published on 8 Apr 2026. An attacker can exploit it over the internet without logging in, with no action from the victim.

Official description

Zammad is a web based open source helpdesk/customer support system. Prior to 7.0.1 and 6.5.4, the used endpoint for ticket creation was missing authorization if the related parameter for adding links is used. This vulnerability is fixed in 7.0.1 and 6.5.4.

Weakness: CWE-862

Which versions are affected by CVE-2026-34722?

It affects 1 product.

Products include Zammad Zammad.

How do I fix CVE-2026-34722?

No fix has been published for CVE-2026-34722 yet. Limit exposure of the affected software until one is available.

Upgrade, and check permissions on every request on the server, not only in the interface. More about Missing authorization.

Is CVE-2026-34722 being exploited?

There is no known exploitation of CVE-2026-34722 in the wild and no public exploit code.

Other vulnerabilities in Zammad Zammad

• CVE-2026-102489 Zammad GmbH Zammad Session Fixation Exploited High 8.7
• CVE-2026-102490 Zammad GmbH Zammad Improper Privilege Management Exploited High 8.5
• CVE-2022-48021 Code injection in n/a Critical 9.8
• CVE-2022-35490 Security feature bypass in n/a Critical 9.8
• CVE-2021-42090 Deserialization in n/a Critical 9.8

All Zammad Zammad vulnerabilities

Sources

• CVE record
• NVD
• OSV
• GitHub advisory
• How this page is made

Also known as GHSA-28m3-wwgv-ppw8.