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-2023-01
  • Date: 2023-03-14
  • Title: Unauthorized Access
  • Severity: low
  • Product: Zammad 5.3.x
  • Fixed in: Zammad 5.4.0
  • References:
    --> CVE-2023-29868

Vulnerability Descriptions

Unauthorized Access

An authenticated attacker with agent and customer roles could perform unauthorized changes on articles where they only have customer permissions.

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:

Or just update your Zammad if installed via OS package manager.

Additional information

Online version of this advisory:

Please send remarks on security issues exclusively to

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