NuytsTech Security

CVE-2026-34721

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Zammad is a web based open source helpdesk/customer support system. Prior to 7.0.1 and 6.5.4, the OAuth callback endpoints for Microsoft, Google, and Facebook external credentials do not validate a CSRF state parameter. This vulnerability is fixed in 7.0.1 and 6.5.4.

More information : https://github.com/zammad/zammad/security/advisories/GHSA-mfwp-hx66-626c

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