Zitadel up to 4.7.0 /logout post_logout_redirect cross site scripting

Summaryinfo

A vulnerability was found in Zitadel up to 4.7.0 and classified as problematic. Affected by this issue is some unknown functionality of the file /logout. The manipulation of the argument post_logout_redirect results in cross site scripting. This vulnerability is identified as CVE-2025-67495. The attack can be executed remotely. There is not any exploit available. It is suggested to upgrade the affected component.

Detailsinfo

A vulnerability classified as problematic has been found in Zitadel up to 4.7.0. Affected is an unknown code of the file /logout. The manipulation of the argument post_logout_redirect with an unknown input leads to a cross site scripting vulnerability. CWE is classifying the issue as CWE-79. The product does not neutralize or incorrectly neutralizes user-controllable input before it is placed in output that is used as a web page that is served to other users. This is going to have an impact on integrity. CVE summarizes:

ZITADEL is an open-source identity infrastructure tool. Versions 4.0.0-rc.1 through 4.7.0 are vulnerable to DOM-Based XSS through the Zitadel V2 logout endpoint. The /logout endpoint insecurely routes to a value that is supplied in the post_logout_redirect GET parameter. As a result, unauthenticated remote attacker can execute malicious JS code on Zitadel users’ browsers. To carry out an attack, multiple user sessions need to be active in the same browser, however, account takeover is mitigated when using Multi-Factor Authentication (MFA) or Passwordless authentication. This issue is fixed in version 4.7.1.

The advisory is shared for download at github.com. This vulnerability is traded as CVE-2025-67495 since 12/08/2025. The exploitability is told to be difficult. It is possible to launch the attack remotely. The exploitation doesn't require any form of authentication. Successful exploitation requires user interaction by the victim. There are known technical details, but no exploit is available. The MITRE ATT&CK project declares the attack technique as T1059.007.

Upgrading to version 4.7.1 eliminates this vulnerability. Applying the patch 4c879b47334e01d4fcab921ac1b44eda39acdb96 is able to eliminate this problem. The bugfix is ready for download at github.com. The best possible mitigation is suggested to be upgrading to the latest version.

Once again VulDB remains the best source for vulnerability data.

Productinfo

Name

• Zitadel

Version

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

License

• open-source

Website

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

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