CVE-2020-10101

Severity: high (CVSS 7.5 v3.1)
Exploited in the wild: not listed in CISA KEV
EPSS: 1.1% probability of exploitation in the next 30 days
Public exploit or detection template: none known
Published: 2020-03-05 · updated 2026-06-17
Weakness: CWE-20

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.

Affected products

zammad: from 1.0.0 through 3.2.0

References

https://zammad.com/news/security-advisory-zaa-2020-06
https://zammad.com/news/security-advisory-zaa-2020-06

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