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CVE-2026-56665— ZITADEL: Missing Token Expiration (`exp`) Validation in JWT IdP Provider

CVSS 4.2 · Medium EPSS 0.17% · P6

Possible ATT&CK Techniques 1AI

T1528 · Steal Application Access Token

Affected Version Matrix 2

VendorProductVersion RangeStatus
zitadelzitadel>= 4.0.0-rc.1, < 4.15.2affected
< 3.4.12affected
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I. Basic Information for CVE-2026-56665

Vulnerability Information
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Vulnerability Title
ZITADEL: Missing Token Expiration (`exp`) Validation in JWT IdP Provider
Source: NVD (National Vulnerability Database)
Vulnerability Description
ZITADEL is an open source identity management platform. Prior to 3.4.12 and 4.15.2, ZITADEL is an open source identity management platform. From 3.0.0-rc.1 through 3.4.11 and from 4.0.0-rc.1 through 4.15.1, ZITADEL's external JWT Identity Provider validation in internal/idp/providers/jwt/session.go skips expiration handling when an incoming token omits the exp claim, allowing a token from a trusted issuer to be treated as valid without an automatic expiration window. This issue is fixed in versions 3.4.12 and 4.15.2.
Source: NVD (National Vulnerability Database)
CVSS Information
CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:L/I:L/A:N
Source: NVD (National Vulnerability Database)
Vulnerability Type
不充分的会话过期机制
Source: NVD (National Vulnerability Database)

Affected Products

VendorProductAffected VersionsCPESubscribe
zitadelzitadel >= 4.0.0-rc.1, < 4.15.2 -

II. Public POCs for CVE-2026-56665

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III. Intelligence Information for CVE-2026-56665

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Patches & Fixes for CVE-2026-56665 (2)

Vendor Advisories for CVE-2026-56665 (1)

Vendor Pages for CVE-2026-56665 (2)

Same Patch Batch · zitadel · 2026-07-10 · 9 CVEs total

CVE-2026-566688.1 HIGHZITADEL: Unauthorized Token Privilege Escalation in OAuth2 Token Exchange
CVE-2026-556727.4 HIGHZITADEL: Missing client_id binding in OIDC authorization code exchange and refresh token f
CVE-2026-566677.3 HIGHZITADEL: Stored XSS via Default URI Redirect in Login V2
CVE-2026-566664.8 MEDIUMZITADEL: Auto-linking by email: IdP-side email verification is not checked
CVE-2026-556694.2 MEDIUMZITADEL: Missing Token Audience Validation (`aud`) in JWT IdP Provider
CVE-2026-566644.2 MEDIUMZITADEL: Missing Token Lifecyle Validation (`exp` and `iat`) in JWT IdP Provider
CVE-2026-55670ZITADEL: Cross-Tenant User Leakage via Recycled Identifiers
CVE-2026-55671ZITADEL: Server-Side Request Forgery (SSRF) and Denylist Bypass in Outgoing HTTP Component

IV. Related Vulnerabilities

Same product: zitadel
Same vendor: zitadel
Same weakness: CWE-613

V. Comments for CVE-2026-56665

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