CVE-2024-39274

Mattermost versions 9.9.x <= 9.9.0, 9.5.x <= 9.5.6, 9.7.x <= 9.7.5 and 9.8.x <= 9.8.1 fail to properly validate thatthe channel that comes from the sync message is a shared channel, when shared channels are enabled, which allows a malicious remote to add users to arbitrary teams and channels
ProviderTypeBase ScoreAtk. VectorAtk. ComplexityPriv. RequiredVector
NISTNIST
8.7 HIGH
NETWORK
LOW
HIGH
CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:C/C:H/I:H/A:N
MattermostCNA
8.7 HIGH
NETWORK
LOW
HIGH
CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:C/C:H/I:H/A:N
CISA-ADPADP
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Base Score
CVSS 3.x
EPSS Score
Percentile: 34%
VendorProductVersion
mattermostmattermost
9.5.6 ≤
𝑥
≤ 9.5.6
mattermostmattermost
9.7.5 ≤
𝑥
≤ 9.7.5
mattermostmattermost
9.8.1 ≤
𝑥
≤ 9.8.1
mattermostmattermost
9.5.0 ≤
𝑥
< 9.5.7
mattermostmattermost
9.7.0 ≤
𝑥
< 9.7.6
mattermostmattermost
9.8.0 ≤
𝑥
< 9.8.2
mattermostmattermost
9.9.0
𝑥
= Vulnerable software versions
Common Weakness Enumeration
References
https://mattermost.com/security-updates