arrow-left arrow-right autosave chat checkmark close dashboard fields fingerprint flash hamburger language list lock logotype long-arrow-right marker migrate overviews phone rocket search smiley stamp star stopwatch team twitter

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

Security Advisory Details

Vulnerability Descriptions

Authorization Issues Allow for Users to View Data from Others (CVE 2020-10100)

Zammad allows for users to view ticket customer details associated with specific customers. However, the application does not properly implement access controls related to this functionality. As such, users of one company are able to access ticket data from other companies.

Due to the multi-tenant nature of this application, users who can access ticket details from one organization to the next allows for users to ex-filtrate potentially sensitive data of other companies.

Special 🙏 and 🤘 and ❤️ to:

N: Guardian Project
W: https://guardianproject.info

N: Center for Digital Resilience
W: https://digiresilience.org

Recommended Resolution

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: https://zammad.com/news/security-advisory-zaa-2020-05

Send all remarks to security issues to security @ zammad.com.