Description
Mattermost versions 11.3.x <= 11.3.0, 11.2.x <= 11.2.2, 10.11.x <= 10.11.10 fail to bound memory allocation when processing DOC files which allows an authenticated attacker to cause server memory exhaustion and denial of service via uploading a specially crafted DOC file.. Mattermost Advisory ID: MMSA-2026-00581
References (1)
Scores
CVSS v3
4.3
EPSS
0.0005
EPSS Percentile
16.1%
Attack Vector
NETWORK
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:L
CISA SSVC
Vulnrichment
Exploitation
none
Automatable
no
Technical Impact
partial
Details
CWE
CWE-789
Status
published
Products (10)
mattermost/mattermost
0 - 8.0.0-20260123215601-86797c508c44Go
Mattermost/Mattermost
10.11.0 - 10.11.10
Mattermost/Mattermost
10.11.11
Mattermost/Mattermost
11.2.0 - 11.2.2
Mattermost/Mattermost
11.2.3
Mattermost/Mattermost
11.3.0
Mattermost/Mattermost
11.3.1
Mattermost/Mattermost
11.4.0
mattermost/mattermost-server
0 - 5.3.2-0.20260123215601-86797c508c44Go
mattermost/mattermost_server
10.11.0 - 10.11.11
Published
Mar 16, 2026
Tracked Since
Mar 16, 2026