---
cve: "CVE-2026-89314"
severity: "MEDIUM"
cvss: 6.9
epss: "0.3%"
vendor: "Eclipse Foundation"
kev: false
exploited: false
published: "2026-10-23 09:17:07"
tags: [cve, security, medium]
source: tsecurity.de CVE-Dossier
exported: "2026-10-27T20:52:10+01:00"
---

# CVE-2026-89314

> 6.9 MEDIUM · 🧪 PoC

## Beschreibung

`jwkFields.CheckConsistency` detected duplicate `key_ops` entries with a pairwise nested loop, making validation cost grow with the **square** of the entry count. Because the check runs on every JWK and JWKS unmarshal, a modestly sized but hostile JWKS document could occupy a CPU core for many seconds.

## CNA-Record (Kanon, cvelistV5)

- CNA: **eclipse**
- State: PUBLISHED
- Stand: 2026-10-23 08:43:38
- CNA-CVSS: **6.9** (`CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N`)

## CVSS-Vektor

```
CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N
```

| Metrik | Wert | Bewertung |
|---|---|---|
| AV Angriffsvektor | Netzwerk | bad |
| AC Komplexität | Gering | bad |
| PR Privilegien | Keine | bad |
| UI Interaktion | Keine | bad |

## Schwachstellen-Klasse

- **CWE-407** — Inefficient Algorithmic Complexity
  An algorithm in a product has an inefficient worst-case computational complexity that may be detrimental to system performance and can be triggered by an attacker, typically using crafted manipulations that ensure that the worst case is being reached.

## Patch verfügbar (OSV)

- 692c25c38e72e91a146c00598017e1a869e75ef6 (Commit)

## Referenzen

- <https://github.com/eclipse-keypont/gose/security/advisories/GHSA-r56w-f43c-828p>

---
_Exportiert aus dem [tsecurity.de CVE-Dossier](https://tsecurity.de/sicherheitsluecken/cve-2026-89314/) · Datenquellen: EUVD (ENISA), NVD, OSV, CISA KEV, FIRST EPSS, Exploit-DB, BSI WID (CSAF)_