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An issue in Zammad v5.4.0 allows attackers to bypass e-mail verification using an arbitrary address and manipulate the data of the generated user. Attackers are also able to gain unauthorized access to existing tickets.
Cite this page
CVE-2023-31597. CVEDatabase.com. Retrieved 1 May 2026. https://cvedatabase.com/cve/CVE-2023-31597
Use CWE-863, Zammad vendor hub and Zammad product page to widen CVE-2023-31597 into its surrounding weakness, vendor, and product context.
Compare it with CVE-2026-34724, CVE-2026-34723 and CVE-2026-34719 for nearby disclosures in the same product family.