CVE-2026-55672

ZITADEL is an open source identity management platform. Prior to 3.4.12 and 4.15.2, ZITADEL's OAuth2 and OIDC CodeExchange, RefreshToken, and device token flows fail to verify that the requesting client matches the client that initiated the authorization flow, allowing intercepted grants or refresh tokens to be exchanged under a different client. This issue is fixed in versions 3.4.12 and 4.15.2.

• CWE-287
• CWE-863

• https://github.com/zitadel/zitadel/commit/562403079a98cf2059cdac11865a45e2f285be71
• https://github.com/zitadel/zitadel/commit/5b1708e0e650398f0ebc3341714f0798b0118917
• https://github.com/zitadel/zitadel/releases/tag/v3.4.12
• https://github.com/zitadel/zitadel/releases/tag/v4.15.2
• https://github.com/zitadel/zitadel/security/advisories/GHSA-xqxv-4jc2-x56x

Published

Jul 10, 2026

Last Modified

Jul 10, 2026

Status

Deferred

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