Security Advisory


· Please read carefully and check if the version of your Zammad system is affected by this vulnerability. Please send us information regarding vulnerabilities in Zammad!

Security Advisory Details

  • ID: ZAA-2021-20
  • Date: 10/28/2021
  • Title: Unauthorized Access
  • Severity: high
  • Product: Zammad 5.0.1
  • Fixed in: Zammad 5.0.2
  • References:
    --> CVE-2021-43145

Vulnerability Descriptions

Unauthorized Access

With certain LDAP configurations, Zammad was found to be vulnerable to unauthorized access with existing user accounts.
Earlier versions, prior to Zammad 5.0, are not affected by this vulnerability.

Special 🙏 and 🤘 and ❤️ to:

This vulnerability is fixed in the latest versions of Zammad and it is recommended to upgrade to one of these.

Fixed releases can be found at:

Additional information

Online version of this advisory:

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