CVE-2019-20871

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CVSS 3.1

7.5 high

EPSS

1%p64

Published

Jun 19, 2020 (Jun 19, 2020)

Modified

Jun 17, 2026

Description

An issue was discovered in Mattermost Server before 5.9.0, 5.8.1, 5.7.3, and 4.10.8. The Markdown library allows catastrophic backtracking.

Vendors: mattermost
Products: mattermost server
Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

NVD CVE.org GitHub PoCs EPSS (1.1%)

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