Description

Zammad is a web based open source helpdesk/customer support system. Prior to 7.0.1 and 6.5.4, the SSO mechanism in Zammad was not verifying the header originates from a trusted SSO proxy/gateway before applying further actions on it. This vulnerability is fixed in 7.0.1 and 6.5.4.

INFO

Published Date :

2026-04-08T18:11:23.538Z

Last Modified :

2026-04-09T16:17:34.878Z

Source :

GitHub_M
AFFECTED PRODUCTS

The following products are affected by CVE-2026-34720 vulnerability.

Vendors Products
Zammad
  • Zammad
REFERENCES

Here, you will find a curated list of external links that provide in-depth information to CVE-2026-34720.

URL Resource
https://github.com/zammad/zammad/security/advisories/GHSA-hcv6-w4h9-p2p7 cve-icon cve-icon
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CVSS Vulnerability Scoring System

Detailed values of each vector for above chart.
Attack Vector
Attack Complexity
Attack Requirements
Privileges Required
User Interaction
VS Confidentiality
VS Integrity
VS Availability
SS Confidentiality
SS Integrity
SS Availability