TI-2026-40849 Aliases CVE-2026-56665 GHSA-v77h-2w3m-94hx

ZITADEL: Missing Token Expiration (`exp`) Validation in JWT IdP Provider

LOW 19CWE-613Published 2026-07-10 · Updated 2026-07-10

Key facts

Attack vector: Network
Privileges required: Low
User interaction: None
Attack complexity: High
Impact type: Security bypass
Confidentiality · integrity · availability: Low · Low · None
Fix status: Fixed

Attack profile from CVSS 3.1 · CNA. Fix status from CNA and GitHub. Impact type from CWE-613.

Summary

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.

Why it matters now

Exploitation None reported CISA SSVC · not in CISA KEV

EPSS 0.00266 18th percentileScored 2026-11-07

Fix Fixed zitadel (zitadel): 4.15.2, 3.4.12github.com/zitadel/zitadel (Go): 4.15.2, 3.4.12

SSVC decision points

CISA ADP · SSVC 2.0.3

Exploitation: None
Automatable: No
Technical impact: Partial

The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.

Affected products

Vendor	Product	Affected versions	Fixed in	Status	Source
zitadel	zitadel	4.0.0-rc.1 to before 4.15.2; before 3.4.12	4.15.2, 3.4.12	Patch available	CNA
—	github.com/zitadel/zitadel (Go)	4.0.0-rc.1 to before 4.15.2	4.15.2	Patch available	GHSA-v77h-2w3m-94hx
—	github.com/zitadel/zitadel (Go)	before 3.4.12	3.4.12	Patch available	GHSA-v77h-2w3m-94hx

zitadel Vendorzitadel Affected 4.0.0-rc.1 to before 4.15.2; before 3.4.12 Fixed in 4.15.2, 3.4.12 Patch available CNA
github.com/zitadel/zitadel (Go) Vendor— Affected 4.0.0-rc.1 to before 4.15.2 Fixed in 4.15.2 Patch available GHSA-v77h-2w3m-94hx
github.com/zitadel/zitadel (Go) Vendor— Affected before 3.4.12 Fixed in 3.4.12 Patch available GHSA-v77h-2w3m-94hx

CPE names Threatist (inferred) · 1

Inferred from how NVD named this product before; not given by a source.

CPE	Versions	Role	Vendor
cpe:2.3:a:zitadel:zitadel::::::::	—	—	zitadel

cpe:2.3:a:zitadel:zitadel:*:*:*:*:*:*:*:* Versions — — ·zitadel

Remediation

Fix · CNA zitadel (zitadel) Fixed in 4.15.2, 3.4.12
Fix · GHSA-v77h-2w3m-94hx github.com/zitadel/zitadel (Go) Fixed in 4.15.2 Advisory →
Fix · GHSA-v77h-2w3m-94hx github.com/zitadel/zitadel (Go) Fixed in 3.4.12 Advisory →

Timeline

2026-10-02 Threatist record created from CVE-2026-56665
2026-10-03 Alias added: GHSA-v77h-2w3m-94hx

References

Advisory 1

https://nvd.nist.gov/vuln/detail/CVE-2026-56665

Other 6

TI-2024-26607 ZITADEL Vulnerable to Session Information Leakage CVSS 3.1MEDIUM 6.5
TI-2026-67551 ZITADEL before 4.16.2 Account Pre-Hijacking via Forged External IdP Callback CVSS 4.0CRITICAL 9.3
TI-2026-67543 ZITADEL before 4.17.3 Account Takeover via External IdP Linking CVSS 4.0CRITICAL 9.3
TI-2025-41253 ZITADEL Vulnerable to Unauthenticated Full-Read SSRF via V2 Login CVSS 3.1CRITICAL 9.3
TI-2025-39554 Zitadel Bypass Second Authentication Factor CVSS 4.0HIGH 8.7
TI-2026-82647 ZITADEL Login V2 flaw lets attackers approve device authorizations CVSS 4.0HIGH 8.6

See all 77 →

Sources

This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences