CVE-2025-55074

Mattermost versions 10.11.x <= 10.11.3, 10.5.x <= 10.5.11 fail to enforce access permissions on the Agents plugin which allows other users to determine when users had read channels via channel member objects
ProviderTypeBase ScoreAtk. VectorAtk. ComplexityPriv. RequiredVector
NISTNIST
3 LOW
NETWORK
HIGH
LOW
CVSS:3.1/AV:N/AC:H/PR:L/UI:R/S:C/C:L/I:N/A:N
MattermostCNA
3 LOW
NETWORK
HIGH
LOW
CVSS:3.1/AV:N/AC:H/PR:L/UI:R/S:C/C:L/I:N/A:N
CISA-ADPADP
---
---
Base Score
CVSS 3.x
EPSS Score
Percentile: 7%
VendorProductVersion
mattermostmattermost_server
10.5.0 ≤
𝑥
< 10.5.12
mattermostmattermost_server
10.11.0 ≤
𝑥
< 10.11.4
𝑥
= Vulnerable software versions
References
https://mattermost.com/security-updates