CVE-2020-10101

HIGH

Zammad 3.0-3.2 - Denial of Service via Non-JSON WebSocket Message

Title source: llm
STIX 2.1

Description

An issue was discovered in Zammad 3.0 through 3.2. The WebSocket server crashes when messages in non-JSON format are sent by an attacker. The message format is not properly checked and parsing errors not handled. This leads to a crash of the service process.

References (1)

Core 1
Core References
Patch, Vendor Advisory x_refsource_misc
https://zammad.com/news/security-advisory-zaa-2020-06

Scores

CVSS v3 7.5
EPSS 0.0109
EPSS Percentile 61.0%
Attack Vector NETWORK
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

Details

CWE
CWE-755 CWE-20
Status published
Products (1)
zammad/zammad 1.0.0 - 3.2.0
Published Mar 05, 2020
Tracked Since Feb 18, 2026