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Mattermost versions 10.5.x <= 10.5.1, 10.4.x <= 10.4.3, 9.11.x <= 9.11.9 fail to check the "Allow Users to View Archived Channels" configuration when fetching channel metadata of a post from archived channels, which allows authenticated users to access such information when a channel is archived.
Reserved 2025-04-08 | Published 2025-04-16 | Updated 2025-04-16 | Assigner MattermostCWE-863: Incorrect Authorization
hackit_bharat
mattermost.com/security-updates
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