CVE-2025-31947: Mattermost versions 10.6.x <= 10.6.1, 10.5.x <= 10.5.2, 10.4.x <= 10.4.4, 9.11.x <= 9.11.11 fail to lockout LDAP users following repeated login failures, which…

PriorityP426medium5.3CVSS 3.1

AVNACLPRNUINSUCNINAL

EPSS

0.29%

20.9th percentile

Mattermost versions 10.6.x <= 10.6.1, 10.5.x <= 10.5.2, 10.4.x <= 10.4.4, 9.11.x <= 9.11.11 fail to lockout LDAP users following repeated login failures, which allows attackers to lock external LDAP accounts through repeated login failures through Mattermost.

Affected

17 ranges

Vendor	Product	Version range	Fixed in
github.com	mattermost_mattermost-server	>= 10.4.0+incompatible < 10.4.5+incompatible	10.4.5+incompatible
github.com	mattermost_mattermost-server	>= 10.5.0+incompatible < 10.5.3+incompatible	10.5.3+incompatible
github.com	mattermost_mattermost-server	>= 10.6.0+incompatible < 10.6.2+incompatible	10.6.2+incompatible
github.com	mattermost_mattermost-server	>= 9.11.0+incompatible < 9.11.12+incompatible	9.11.12+incompatible
github.com	mattermost_mattermost_server_v8	>= 0 < 8.0.0-20250415054241-76ab3867b785	8.0.0-20250415054241-76ab3867b785
github.com	mattermost_mattermost_server_v8	>= 10.4.0 < 10.4.5	10.4.5
github.com	mattermost_mattermost_server_v8	>= 10.5.0 < 10.5.3	10.5.3
github.com	mattermost_mattermost_server_v8	>= 10.6.0 < 10.6.2	10.6.2
github.com	mattermost_mattermost_server_v8	>= 9.11.0 < 9.11.12	9.11.12
mattermost	mattermost	10.4.0 – 10.4.4	—
mattermost	mattermost	10.5.0 – 10.5.2	—
mattermost	mattermost	10.6.0 – 10.6.1	—
mattermost	mattermost	9.11.0 – 9.11.11	—
mattermost	mattermost_server	>= 10.4.0 < 10.4.5	10.4.5
mattermost	mattermost_server	>= 10.5.0 < 10.5.3	10.5.3
mattermost	mattermost_server	>= 10.6.0 < 10.6.2	10.6.2
mattermost	mattermost_server	>= 9.11.0 < 9.11.12	9.11.12

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