CVE-2022-40816 Missing authorization in n/a

What is CVE-2022-40816?

CVE-2022-40816 is a medium-severity missing authorization vulnerability in Zammad Zammad, published on 27 Sep 2022. Any signed-in user can exploit it over the network, with no action from the victim.

Official description

Zammad 5.2.1 is vulnerable to Incorrect Access Control. Zammad's asset handling mechanism has logic to ensure that customer users are not able to see personal information of other users. This logic was not effective when used through a web socket connection, so that a logged-in attacker would be able to fetch personal data of other users by querying the Zammad API. This issue is fixed in , 5.2.2.

Weakness: CWE-863

Which versions are affected by CVE-2022-40816?

It affects 1 product.

Products include Zammad Zammad.

How do I fix CVE-2022-40816?

No fix has been published for CVE-2022-40816 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-2022-40816 being exploited?

There is no known exploitation of CVE-2022-40816 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-gwqr-42v8-7m7q.