CVE-2025-20088

published 2025-01-15

CVE-2025-20088: 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 post props which allows a malicious…

Priority P3 35 medium 6.5 CVSS 3.1

AV N AC L PR L UI N S U C N I N A H

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 post props which allows a malicious authenticated user to cause a crash via a malicious post.

Affected

17 ranges

Vendor	Product	Version range	Fixed in
github.com	mattermost_mattermost-server	>= 10.0.0+incompatible < 10.0.4+incompatible	10.0.4+incompatible
github.com	mattermost_mattermost-server	>= 10.1.0+incompatible < 10.1.4+incompatible	10.1.4+incompatible
github.com	mattermost_mattermost-server	>= 10.2.0+incompatible < 10.2.1+incompatible	10.2.1+incompatible
github.com	mattermost_mattermost-server	>= 9.11.0+incompatible < 9.11.6+incompatible	9.11.6+incompatible
github.com	mattermost_mattermost_server_v8	>= 0 < 8.0.0-20241127161322-25ff7a3779a5	8.0.0-20241127161322-25ff7a3779a5
github.com	mattermost_mattermost_server_v8	>= 10.0.0 < 10.0.4	10.0.4
github.com	mattermost_mattermost_server_v8	>= 10.1.0 < 10.1.4	10.1.4
github.com	mattermost_mattermost_server_v8	>= 10.2.0 < 10.2.1	10.2.1
github.com	mattermost_mattermost_server_v8	>= 9.11.0 < 9.11.6	9.11.6
mattermost	mattermost	—	—
mattermost	mattermost	10.0.0 – 10.0.3	—
mattermost	mattermost	10.1.0 – 10.1.3	—
mattermost	mattermost	9.11.0 – 9.11.5	—
mattermost	mattermost_server	—	—
mattermost	mattermost_server	>= 10.0.0 < 10.0.4	10.0.4
mattermost	mattermost_server	>= 10.1.0 < 10.1.4	10.1.4
mattermost	mattermost_server	>= 9.11.0 < 9.11.6	9.11.6

Stop checking back — get the weekly exploitation signal.

Every Monday: what got weaponized or added to CISA KEV in the last seven days — each CVE cross-linked to its PoC, Nuclei template, and detection rule. Free, one email a week, unsubscribe in one click.

CWE-1287