CVE-2025-3227

Mattermost versions 10.5.x <= 10.5.5, 9.11.x <= 9.11.15, 10.8.x <= 10.8.0, 10.7.x <= 10.7.2, 10.6.x <= 10.6.5 fail to properly enforce channel member management permissions in playbook runs, allowing authenticated users without the 'Manage Channel Members' permission to add or remove users from public and private channels by manipulating playbook run participants when the run is linked to a channel.
ProviderTypeBase ScoreAtk. VectorAtk. ComplexityPriv. RequiredVector
NISTNIST
4.3 MEDIUM
NETWORK
LOW
LOW
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N
MattermostCNA
4.3 MEDIUM
NETWORK
LOW
LOW
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N
CISA-ADPADP
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Base Score
CVSS 3.x
EPSS Score
Percentile: 5%
VendorProductVersion
mattermostmattermost_server
9.11.0 ≤
𝑥
< 9.11.16
mattermostmattermost_server
10.5.0 ≤
𝑥
< 10.5.6
mattermostmattermost_server
10.6.0 ≤
𝑥
< 10.6.6
mattermostmattermost_server
10.7.0 ≤
𝑥
< 10.7.3
mattermostmattermost_server
10.8.0
mattermostmattermost_server
10.8.0:rc1
mattermostmattermost_server
10.8.0:rc2
mattermostmattermost_server
10.8.0:rc3
𝑥
= Vulnerable software versions
Common Weakness Enumeration
References
https://mattermost.com/security-updates