CVE-2025-3227

EUVD-2025-18758
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
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
Base Score
CVSS 3.x
EPSS Score
Percentile: 37%
Affected Products (NVD)
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
Early Detection
Affected products identified ahead of NVD analysis through intelligence sources.
VendorProductVersionSource
mattermostmattermost
10.5.0 ≤
𝑥
≤ 10.5.5
CNA
mattermostmattermost
9.11.0 ≤
𝑥
≤ 9.11.15
CNA
mattermostmattermost
10.8.0
CNA
mattermostmattermost
10.7.0 ≤
𝑥
≤ 10.7.2
CNA
mattermostmattermost
10.6.0 ≤
𝑥
≤ 10.6.5
CNA