CVE-2021-43145 Auth bypass in n/a

What is CVE-2021-43145?

CVE-2021-43145 is a high-severity authentication bypass vulnerability in Zammad Zammad, published on 4 Feb 2022. Any signed-in user can exploit it over the network, with no action from the victim.

Official description

With certain LDAP configurations, Zammad 5.0.1 was found to be vulnerable to unauthorized access with existing user accounts.

Which versions are affected by CVE-2021-43145?

It affects 1 product.

Products include Zammad Zammad.

How do I fix CVE-2021-43145?

No fix has been published for CVE-2021-43145 yet. Limit exposure of the affected software until one is available.

Upgrade, and rotate credentials and sessions that may have been exposed. More about Authentication bypass.

Is CVE-2021-43145 being exploited?

There is no known exploitation of CVE-2021-43145 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-ppg8-h3x2-9f2m.