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Mattermost versions 9.5.x <= 9.5.3, 9.6.x <= 9.6.1 and 8.1.x <= 8.1.12 fail to enforce proper access controls which allows user to view arbitrary post contents via the /playbook add slash command
Reserved 2024-05-23 | Published 2024-05-26 | Updated 2024-08-02 | Assigner MattermostCWE-284: Improper Access Control
Juho Nurminen
mattermost.com/security-updates
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