Zitadel up to 4.7.0 Password Reset X-Forwarded-Host redirect

Summaryinfo

A vulnerability was found in Zitadel up to 4.7.0. It has been classified as problematic. Affected by this issue is some unknown functionality of the component Password Reset Handler. This manipulation of the argument X-Forwarded-Host causes redirect. The identification of this vulnerability is CVE-2026-29067. It is possible to initiate the attack remotely. There is no exploit available. Upgrading the affected component is recommended.

Detailsinfo

A vulnerability classified as problematic was found in Zitadel up to 4.7.0. Affected by this vulnerability is an unknown code block of the component Password Reset Handler. The manipulation of the argument X-Forwarded-Host with an unknown input leads to a redirect vulnerability. The CWE definition for the vulnerability is CWE-601. A web application accepts a user-controlled input that specifies a link to an external site, and uses that link in a Redirect. This simplifies phishing attacks. As an impact it is known to affect integrity. The summary by CVE is:

ZITADEL is an open source identity management platform. From version 4.0.0-rc.1 to 4.7.0, a potential vulnerability exists in ZITADEL's password reset mechanism in login V2. ZITADEL utilizes the Forwarded or X-Forwarded-Host header from incoming requests to construct the URL for the password reset confirmation link. This link, containing a secret code, is then emailed to the user. This issue has been patched in version 4.7.1.

The advisory is shared at github.com. This vulnerability is known as CVE-2026-29067 since 03/03/2026. The exploitation appears to be easy. The attack can be launched remotely. The exploitation doesn't need any form of authentication. It demands that the victim is doing some kind of user interaction. Technical details are known, but no exploit is available. MITRE ATT&CK project uses the attack technique T1204.001 for this issue.

Upgrading to version 4.7.1 eliminates this vulnerability.

The vulnerability is also documented in the vulnerability database at EUVD (EUVD-2026-10143). If you want to get the best quality for vulnerability data then you always have to consider VulDB.

Productinfo

Name

• Zitadel

Version

• 4.0
• 4.1
• 4.2
• 4.3
• 4.4
• 4.5
• 4.6
• 4.7.0

Website

• Product: https://github.com/zitadel/zitadel/

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If you want to get the best quality for vulnerability data then you always have to consider VulDB.

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