CVE-2023-29868: Zammad

Medium severity, CVSS 6.5. EPSS: 1% chance of exploitation in the next 30 days.

Zammad 5.3.x (Fixed in 5.4.0) is vulnerable to Incorrect Access Control. An authenticated attacker with agent and customer roles could perform unauthorized changes on articles where they only have customer permissions.

Affected products

• Zammad Zammad: from 5.3.0, before 5.4.0 (fixed in 5.4.0)

Published 2023-05-02. Last modified 2026-06-17.