Security Advisory
ZAA-2021-15
· 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-2021-15
- Date: 10/05/2021
- Title: API leaks application secret
- Severity: medium
- Product: Zammad 1.0.x up to 4.1.0
- Fixed in: Zammad 4.1.1, 5.0.0
- References:
--> CVE: CVE-2021-42087
Vulnerability Descriptions
API leaks application secret
Zammad generates a random application secret for any installation. This application secret is only used application internally for various functionalities (e.g. the website Form) to ensure security. However, the application secret is leaked via the API to authenticated admin users.
Special 🙏 and 🤘 and ❤️ to:
- N: Emil Virkki
- D: Security Researcher
- W: https://github.com/emilvirkki
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:
- https://zammad.org/
- https://ftp.zammad.com/
Or just update your Zammad if installed via OS package manager.
Additional information
Online version of this advisory: https://zammad.com/en/advisories/zaa-2021-15
Send all remarks to security issues to security@zammad.com.