Please read carefully and check if the version of your Zammad system is affected by this vulnerability. Please send information regarding vulnerabilities in Zammad to: security at zammad.com
Malicious HTML send via REST or email lead to execution in the application domain causing a XSS vulnerability. Zammad did not properly sanitizes user input in the title of a table This is now fixed.
Special 🙏 and 🤘 and ❤️ to:
N: ValtteriL / Valtteri Lehtinen
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.
If you have a hosted Zammad, you do not need to take care. It's already updated.
Online version of this advisory: https://zammad.com/news/security-advisory-zaa-2018-01
Send all remarks to security issues to security @ zammad.com.