CVE-2019-20844

An issue was discovered in Mattermost Server before 5.18.0, 5.17.2, 5.16.4, 5.15.4, and 5.9.7. An attacker can spoof a direct-message channel by changing the type of a channel.
ProviderTypeBase ScoreAtk. VectorAtk. ComplexityPriv. RequiredVector
NISTNIST
6.5 MEDIUM
NETWORK
LOW
NONE
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:H/A:N
mitreCNA
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CVEADP
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Base Score
CVSS 3.x
EPSS Score
Percentile: 33%
VendorProductVersion
mattermostmattermost_server
𝑥
< 5.9.7
mattermostmattermost_server
5.15.0 ≤
𝑥
< 5.15.4
mattermostmattermost_server
5.16.0 ≤
𝑥
< 5.16.4
mattermostmattermost_server
5.17.0 ≤
𝑥
< 5.17.2
mattermostmattermost_server
5.18.0:rc1
mattermostmattermost_server
5.18.0:rc2
mattermostmattermost_server
5.18.0:rc3
mattermostmattermost_server
5.18.0:rc4
𝑥
= Vulnerable software versions
Common Weakness Enumeration
References
https://mattermost.com/security-updates/
https://mattermost.com/security-updates/