Mattermost fails to check if hardened mode is enabled when overriding the username and/or the icon when posting a post. If settings allowed integrations to override the username and profile picture when posting, a member could also override the username and icon when making a post even if the Hardened Mode setting was enabled
{ "nvd_published_at": "2023-11-27T09:15:32Z", "cwe_ids": [ "CWE-284" ], "severity": "MODERATE", "github_reviewed": true, "github_reviewed_at": "2023-11-28T20:50:05Z" }