Description

Zammad is a web based open source helpdesk/customer support system. Prior to 7.0.1 and 6.5.4, the webhook model was missing a proper validation for loop back addresses, or link-local addresses — only the URL scheme (HTTP/HTTPS) as well as the hostname was checked. This could end up in retrieving confidential metadata of cloud/hosting providers. The existing check is now extended and is applied when configuring webhooks as well as triggering webhook jobs. This vulnerability is fixed in 7.0.1 and 6.5.4.

INFO

Published Date :

2026-04-08T18:02:16.224Z

Last Modified :

2026-04-08T18:02:16.224Z

Source :

GitHub_M
AFFECTED PRODUCTS

The following products are affected by CVE-2026-34719 vulnerability.

Vendors Products
Zammad
  • Zammad
REFERENCES

Here, you will find a curated list of external links that provide in-depth information to CVE-2026-34719.

URL Resource
https://github.com/zammad/zammad/security/advisories/GHSA-2vgc-vfh2-rw75 cve-icon cve-icon
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