ZITADEL up to 4.15.2 Login Redirect router.push defaultRedirectUri redirect

Summaryinfo

A vulnerability was found in ZITADEL up to 4.15.2 and classified as problematic. The affected element is the function router.push of the component Login Redirect Handler. Such manipulation of the argument defaultRedirectUri leads to redirect. This vulnerability is referenced as CVE-2026-56667. It is possible to launch the attack remotely. No exploit is available.

Detailsinfo

A vulnerability, which was classified as problematic, has been found in ZITADEL up to 4.15.2. Affected by this issue is the function router.push of the component Login Redirect Handler. The manipulation of the argument defaultRedirectUri with an unknown input leads to a redirect vulnerability. Using CWE to declare the problem leads to 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. Impacted is integrity. CVE summarizes:

ZITADEL is an open source identity management platform. Prior to 4.15.3, ZITADEL Login V2 OIDC and SAML FailedPrecondition error paths return loginSettings.defaultRedirectUri to router.push without applying the isSafeRedirectUri check, allowing an organization or instance administrator to store a javascript or data URI that can execute in a user's browser when an affected login error path is reached. This issue is fixed in version 4.15.3.

The advisory is available at github.com. This vulnerability is handled as CVE-2026-56667 since 06/22/2026. The exploitation is known to be easy. The attack may be launched remotely. No form of authentication is required for exploitation. Successful exploitation requires user interaction by the victim. Technical details are known, but there is no available exploit. This vulnerability is assigned to T1204.001 by the MITRE ATT&CK project.

Upgrading to version 4.15.3 eliminates this vulnerability.

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Productinfo

Name

• ZITADEL

Version

• 4.15.0
• 4.15.1
• 4.15.2

Website

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

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If you want to get best quality of vulnerability data, you may have to visit VulDB.

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