CVE-2024-36257

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CVSS 3.1

5.3 medium

EPSS

<1%p23

Published

Jul 3, 2024 (Jul 3, 2024)

Modified

Jun 17, 2026

Description

Mattermost versions 9.5.x <= 9.5.5 and 9.8.0, when using shared channels with multiple remote servers connected, fail to check that the remote server A requesting the server B to update the profile picture of a user is the remote that actually has the user as a local one . This allows a malicious remote A to change the profile images of users that belong to another remote server C that is connected to the server A.

Vendors: mattermost
Products: mattermost
Weakness: CWE-284
Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N

NVD CVE.org GitHub PoCs EPSS (0.3%)

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