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A GitHub-reviewed security advisory, not necessarily under active exploitation the way our CISA KEV advisories are, but a real, disclosed vulnerability in an open-source dependency.
Affected packages
Vulnerable: >= 4.0.0-rc.1, < 4.15.2
Patched in 4.15.2
Vulnerable: < 3.4.12
Patched in 3.4.12
Details
A token lifecycle validation vulnerability was discovered in ZITADEL's external JWT Identity Provider (IdP) implementation
Specifically, within the validation pipeline, if an incoming JWT omits the exp claim entirely, the expiration block is silently skipped rather than rejected. The token is treated as valid forever.
Per the OIDC Core 1.0 specification, identity token validation pipelines must strictly handle and enforce session expiration. ZITADEL's silent acceptance of tokens missing these temporal constraints compromises session integrity.
An attacker in possession of a token lacking an exp claim holds a permanent credential with no automatic expiration or revocation window.
Systems running one of the following versions are affected:
4.0.0 through 4.15.1 (including RC versions)3.0.0 through 3.4.11 (including RC versions)The vulnerability has been addressed in the latest releases. ZITADEL now explicitly rejects tokens that lack an exp claim.
The recommended solution is to update ZITADEL to a patched version.
If an immediate upgrade is not feasible, ensure at the upstream Identity Provider level that an external IdP explicitly includes the exp claim in all signed JWTs.
This issue was originally disclosed as part of a unified security bulletin published under GHSA-wxg7-w2v3-w38g. To satisfy CVE Numbering Authority regulations regarding independently fixable logic flaws, the missing token expiration validation (exp) has been moved into this separate tracking entry so a distinct CVE ID can be correctly mapped to it.
If there are any questions or comments about this advisory, send an email to [email protected]
ZITADEL thanks Android-Login-Analysis, Jason Zhou and Pedro Giglioti for reporting this vulnerability.
EPSS, exploit probability
Low0.27%
estimated chance of real-world exploitation in the next 30 days, higher than 18.6% of every CVE FIRST.org scores
Refreshed 10/30/2026, via FIRST.org's EPSS model, not CVSS, this measures likelihood of exploitation, not how severe it would be.
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