CVSS 3.1 Score 2.7 of 10 (low)


Published Jul 3, 2024
Updated: Jul 5, 2024
CWE ID 284


CVE-2024-36257 is a vulnerability affecting Mattermost versions 9.5.x <= 9.5.5 and 9.8.0. It occurs when using shared channels with multiple remote servers connected, as the software fails to verify if the requesting server has the user as a local one before updating their profile picture. This allows a malicious remote server to change the profile images of users belonging to another remote server that is connected to it. The vulnerability has a risk score of 31 and is categorized as CWE-284 (Improper Access Control). The base severity is rated as LOW, with a base score of 2.7 and an impact score of 1.4. Remediation should involve updating Mattermost to a version that includes the necessary security fixes to mitigate this vulnerability and prevent unauthorized profile picture changes. Organizations using affected versions should be cautious as this could potentially lead to unauthorized access and misuse of user profiles within their environment.

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