---
cve: "CVE-2026-66276"
severity: "MEDIUM"
cvss: 6.5
epss: "42%"
vendor: "Apache Software Foundation"
kev: false
exploited: false
published: "2026-08-05 07:16:37"
tags: [cve, security, medium]
source: tsecurity.de CVE-Dossier
exported: "2026-09-10T14:02:57+02:00"
---

# CVE-2026-66276

> 6.5 MEDIUM

## Beschreibung

An authenticated attacker can craft a disposition frame with large or illegal ranges causing excessive CPU usage due to naive range handling, leading to denial of service.

This issue affects Apache Qpid Proton-J: through 0.34.1.

Users are recommended to upgrade to version 0.35.0, which fixes the issue.

## CVSS-Vektor

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

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

## Patch verfügbar (OSV)

- 743eecb20a8d7592d953147984c3e84b9d05b070 (Commit)

## Referenzen

- <https://lists.apache.org/thread/14nj0lpsqpnd3q0hw0t0tw44qvdo1jc2>
- <http://www.openwall.com/lists/oss-security/2026/08/04/12>

---
_Exportiert aus dem [tsecurity.de CVE-Dossier](https://tsecurity.de/cve?cve=CVE-2026-66276) · Datenquellen: EUVD (ENISA), NVD, OSV, CISA KEV, FIRST EPSS, Exploit-DB, BSI BITS_