---
cve: "CVE-2026-56665"
severity: "MEDIUM"
cvss: 4.2
epss: "17%"
vendor: "zitadel"
kev: false
exploited: false
published: "2026-07-10 18:16:24"
tags: [cve, security, medium]
source: tsecurity.de CVE-Dossier
exported: "2026-09-13T02:14:26+02:00"
---

# CVE-2026-56665

> 4.2 MEDIUM · 🧪 PoC

## Beschreibung

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.

## CVSS-Vektor

```
CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:L/I:L/A:N
```

| Metrik | Wert | Bewertung |
|---|---|---|
| AV Angriffsvektor | Netzwerk | bad |
| AC Komplexität | Hoch | good |
| PR Privilegien | Gering | warn |
| UI Interaktion | Keine | bad |
| S Scope | Unverändert | good |
| C Vertraulichkeit | Gering | warn |
| I Integrität | Gering | warn |
| A Verfügbarkeit | Keine | good |

## Patch verfügbar (OSV)

- 90f310212d3a5075084a603bf61fed549c92956d (Commit)
- a1748b2f0326ddf7be0de44b4f980ae2c07c0151 (Commit)

## Referenzen

- <https://github.com/zitadel/zitadel/security/advisories/GHSA-v77h-2w3m-94hx>
- <https://github.com/zitadel/zitadel/commit/4925fab849d39a88674485d937b79e54318b48a8>
- <https://github.com/zitadel/zitadel/commit/d1c3aa84af8fcb0f33910ada30b866f4afb551ac>
- <https://github.com/zitadel/zitadel/releases/tag/v3.4.12>
- <https://github.com/zitadel/zitadel/releases/tag/v4.15.2>

---
_Exportiert aus dem [tsecurity.de CVE-Dossier](https://tsecurity.de/cve?cve=CVE-2026-56665) · Datenquellen: EUVD (ENISA), NVD, OSV, CISA KEV, FIRST EPSS, Exploit-DB, BSI BITS_