Answer in brief
CVE-2026-55672 records a High severity (CVSS 7.4) vulnerability in ZITADEL: Missing client_id binding in OIDC authorization code exchange and refresh token flows (RFC 6749 Section 4.1.3 violation). The current sources do not mark it as known exploited. The current feed maps zitadel/zitadel (generic), github.com/zitadel/zitadel (go). Check affected ranges and fixed versions before updating.
Analysis pending evidence review
HOL Guard separates source facts from reviewed analysis. See the methodology.
CVSS is 7.4. The current sources do not mark it as known exploited. Treat this as a source-backed prioritization signal, not a statement about your environment.
Analysis status
Analysis pending evidence review
Factual feed record only; HOL analysis is not approved for indexing. Read the methodology.
The current feed maps zitadel/zitadel (generic), github.com/zitadel/zitadel (go). Check affected ranges and fixed versions before updating.
| Package | Affected range | Fixed version |
|---|---|---|
| zitadel/zitadelgeneric | >= 4.0.0-rc.1, < 4.15.2 || < 3.4.12 | Not reported |
| github.com/zitadel/zitadelgo | <1.80.0-v2.20.0.20260616131956-0973b074b488 | 1.80.0-v2.20.0.20260616131956-0973b074b488 |
Published upstream
Jul 10, 2026
Evidence: source:cvelist:source_dates:source-dates:recordSource modified
Jul 15, 2026
Evidence: source:cvelist:source_dates:source-dates:recordFirst seen by HOL
Jun 19, 2026
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.
Quoted source text, attributed separately from HOL analysis.