Description

Zitadel is an open source identity management system. ZITADEL uses HTML for emails and renders certain information such as usernames dynamically. That information can be entered by users or administrators. Due to a missing output sanitization, these emails could include malicious code. This may potentially lead to a threat where an attacker, without privileges, could send out altered notifications that are part of the registration processes. An attacker could create a malicious link, where the injected code would be rendered as part of the email. On the user's detail page, the username was also not sanitized and would also render HTML, giving an attacker the same vulnerability. While it was possible to inject HTML including javascript, the execution of such scripts would be prevented by most email clients and the Content Security Policy in Console UI. This vulnerability is fixed in 2.58.1, 2.57.1, 2.56.2, 2.55.5, 2.54.8 2.53.9, and 2.52.3.

Severity Medium

CVSS Score 4.3

CVSS Vector CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:L/A:N

CWE CWE-79

Public Exploit ✅ No

Source NVD

Published 2024-07-31

Updated 2026-06-15

Modified 2025-07-09

Fix URL https://github.com/zitadel/zitadel/commit/0e1f99e987b5851caec45a72660fe9f67e425747

Software	From version	Fixed in
github.com/zitadel/zitadel	—	—
zitadel	—	—