---
cve: "CVE-2026-102560"
severity: "HIGH"
cvss: 8.6
epss: "0.3%"
vendor: "Generic Security"
kev: false
exploited: false
published: "2026-09-29 18:17:08"
tags: [cve, security, high]
source: tsecurity.de CVE-Dossier
exported: "2026-10-05T03:22:18+02:00"
---

# CVE-2026-102560

> 8.6 HIGH

## Beschreibung

A flaw was found in libsoup. When the permessage-deflate WebSocket extension compresses a very large outgoing message, truncated size calculations used for GByteArray growth could wrap, causing zlib to write past the allocated buffer and resulting in a heap buffer overflow.

## CNA-Record (Kanon, cvelistV5)

- CNA: **redhat**
- State: PUBLISHED
- Stand: 2026-09-29 19:51:56
- CNA-CVSS: **8.6** (`CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:H`)

## CISA-Anreicherung (vulnrichment/ADP)

- CISA-SSVC (Coordinator, v2.0.3):
  - Exploitation: **none**
  - Automatable: **yes**
  - Technical Impact: **partial**

## CVSS-Vektor

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

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

## Referenzen

- <https://access.redhat.com/security/cve/CVE-2026-102560>
- <https://bugzilla.redhat.com/show_bug.cgi?id=2543296>

---
_Exportiert aus dem [tsecurity.de CVE-Dossier](https://tsecurity.de/cve?cve=CVE-2026-102560) · Datenquellen: EUVD (ENISA), NVD, OSV, CISA KEV, FIRST EPSS, Exploit-DB, BSI WID (CSAF)_