Description
Mattermost versions 10.2.x <= 10.2.0, 9.11.x <= 9.11.5, 10.0.x <= 10.0.3, 10.1.x <= 10.1.3 fail to properly validate the style of proto supplied to an action's style in post.props.attachments, which allows an attacker to crash the frontend via crafted malicious input.
References (1)
Core 1
Core References
Vendor Advisory
https://mattermost.com/security-updates
Scores
CVSS v3
6.5
EPSS
0.0054
EPSS Percentile
40.9%
Attack Vector
NETWORK
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
CISA SSVC
Vulnrichment
Exploitation
none
Automatable
no
Technical Impact
partial
Details
CWE
CWE-704
Status
published
Products (3)
mattermost/mattermost
10.2.0 - 10.2.1Go
mattermost/mattermost_server
10.2.0
mattermost/mattermost_server
9.11.0 - 9.11.6
Published
Jan 15, 2025
Tracked Since
Feb 18, 2026