CVE-2019-20871 : An issue was discovered in Mattermost Server before 5.9.0, 5.8.1, 5.7.3, and 4.1

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.

Published 2020-06-19 16:15:11

Updated 2020-06-23 16:35:15

Source MITRE

View at NVD, CVE.org

Products affected by CVE-2019-20871

Mattermost » Mattermost Server
Versions from including (>=) 5.8.0 and before (<) 5.8.1
cpe:2.3:a:mattermost:mattermost_server:*:*:*:*:*:*:*:*
Matching versions
Mattermost » Mattermost Server
Versions before (<) 4.10.8
cpe:2.3:a:mattermost:mattermost_server:*:*:*:*:*:*:*:*
Matching versions
Mattermost » Mattermost Server
Versions from including (>=) 5.7.0 and before (<) 5.7.3
cpe:2.3:a:mattermost:mattermost_server:*:*:*:*:*:*:*:*
Matching versions
Mattermost » Mattermost Server » Version: 5.9.0 Update RC1
cpe:2.3:a:mattermost:mattermost_server:5.9.0:rc1:*:*:*:*:*:*
Matching versions
Mattermost » Mattermost Server » Version: 5.9.0 Update RC2
cpe:2.3:a:mattermost:mattermost_server:5.9.0:rc2:*:*:*:*:*:*
Matching versions
Mattermost » Mattermost Server » Version: 5.9.0 Update RC3
cpe:2.3:a:mattermost:mattermost_server:5.9.0:rc3:*:*:*:*:*:*
Matching versions
Mattermost » Mattermost Server » Version: 5.9.0 Update RC4
cpe:2.3:a:mattermost:mattermost_server:5.9.0:rc4:*:*:*:*:*:*
Matching versions

EPSS FAQ

0.10%

Probability of exploitation activity in the next 30 days EPSS Score History

~ 41 %

Percentile, the proportion of vulnerabilities that are scored at or less

Base Score	Base Severity	CVSS Vector	Exploitability Score	Impact Score	Score Source
5.0	MEDIUM	AV:N/AC:L/Au:N/C:N/I:N/A:P	10.0	2.9	NIST
Access Vector: Network Access Complexity: Low Authentication: None Confidentiality Impact: None Integrity Impact: None Availability Impact: Partial
7.5	HIGH	CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H	3.9	3.6	NIST
Attack Vector: Network Attack Complexity: Low Privileges Required: None User Interaction: None Scope: Unchanged Confidentiality: None Integrity: None Availability: High

Jump to