CVE-2026-55672

High

Description

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.

SeverityHigh

CVSS7.4

Exploit probability—

ProductGithub.com/zitadel/zitadel

PublishedJul 10, 2026

First seenJul 10, 2026

Weakness typeCWE-287Improper authentication CWE-863Incorrect authorization

How to fix

Update

github.com/zitadel/zitadel1.80.0-v2.20.0.20260616131956-0973b074b488 or later

Affected products

Product	Affected versions	Fixed in
github.com/zitadel/zitadelGo	v < 1.80.0-v2.20.0.20260616131956-0973b074b488	1.80.0-v2.20.0.20260616131956-0973b074b488

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