Missing Authorization Affecting github.com/zitadel/zitadel/internal/api/oidc package, versions <4.15.3
Threat Intelligence
The probability is the direct output of the EPSS model, and conveys an overall sense of the threat of exploitation in the wild. The percentile measures the EPSS probability relative to all known EPSS scores. Note: This data is updated daily, relying on the latest available EPSS model version. Check out the EPSS documentation for more details.
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Start learning- Snyk IDSNYK-GOLANG-GITHUBCOMZITADELZITADELINTERNALAPIOIDC-17951169
- published11 Jul 2026
- disclosed10 Jul 2026
- creditUnknown
Introduced: 10 Jul 2026
CVE-2026-56668 Â (opens in a new tab)How to fix?
Upgrade github.com/zitadel/zitadel/internal/api/oidc to version 4.15.3 or higher.
Overview
github.com/zitadel/zitadel/internal/api/oidc is a package for identity infrastructure
Affected versions of this package are vulnerable to Missing Authorization in the OAuth2 Token Exchange process. An attacker can gain elevated permissions by exchanging a low-privilege token for higher privileges at another application due to insufficient verification that the subject token belongs to the requesting client and that requested scopes are within the original token's scopes.