Description
Mattermost versions 10.4.x <= 10.4.2, 10.5.x <= 10.5.0, 9.11.x <= 9.11.10 fail to properly validate the props used by the RetrospectivePost custom post type in the Playbooks plugin, which allows an attacker to create a specially crafted post with maliciously crafted props and cause a denial of service (DoS) of the web app for all users.
References (1)
Scores
CVSS v3
6.5
EPSS
0.0013
EPSS Percentile
32.4%
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-1287
Status
published
Products (3)
mattermost/mattermost
0 - 8.0.0-20250218121836-2b5275d87136Go
mattermost/mattermost-plugin-playbooks
2.0.0Go
mattermost/mattermost_server
9.11.0 - 9.11.11
Published
Apr 24, 2025
Tracked Since
Feb 18, 2026