---
cve: "CVE-2026-55689"
severity: "MEDIUM"
cvss: 6.8
epss: "0.4%"
vendor: "openfga"
kev: false
exploited: false
published: "2026-07-09 22:17:06"
tags: [cve, security, medium]
source: tsecurity.de CVE-Dossier
exported: "2026-09-21T12:17:46+02:00"
---

# CVE-2026-55689

> 6.8 MEDIUM · 🧪 PoC

## Beschreibung

OpenFGA is an authorization/permission engine built for developers. Prior to 1.18.0, OpenFGA's OIDC authenticator skipped JWT audience validation when authn.method was set to oidc, authn.oidc.issuer was configured, and authn.oidc.audience was not set, allowing a token minted for an unrelated service by the same identity provider to authenticate to OpenFGA. This issue is fixed in 1.18.0.

## CVSS-Vektor

```
CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:H/I:H/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 | Hoch | bad |
| I Integrität | Hoch | bad |
| A Verfügbarkeit | Keine | good |

## Patch verfügbar (OSV)

- 96d5517a2693ff5def451dee7d6b9d1baeb281f8 (Commit)
- 81089a31698505b4d5f01311c04e83b9adfcf383 (Commit)

## Referenzen

- <https://github.com/openfga/openfga/security/advisories/GHSA-hcxc-wf8j-23hv>
- <https://github.com/openfga/openfga/commit/44596773b2e62738720ef215bf7fa04352954271>
- <https://github.com/openfga/helm-ch>
- <https://github.com/openfga/helm-charts/releases/tag/openfga-0.3.9>
- <https://github.com/openfga/openfga/releases/tag/v1.18.0>

---
_Exportiert aus dem [tsecurity.de CVE-Dossier](https://tsecurity.de/cve?cve=CVE-2026-55689) · Datenquellen: EUVD (ENISA), NVD, OSV, CISA KEV, FIRST EPSS, Exploit-DB, BSI BITS_