CVE-2025-6226 (GCVE-0-2025-6226)
Vulnerability from cvelistv5
Published
2025-07-18 08:48
Modified
2025-08-07 09:53
Severity ?
6.5 (Medium) - CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N
CWE
  • CWE-306 - Missing Authentication for Critical Function
Summary
Mattermost versions 10.5.x <= 10.5.6, 10.8.x <= 10.8.1, 10.7.x <= 10.7.3, 9.11.x <= 9.11.16 fail to verify authorization when retrieving cached posts by PendingPostID which allows an authenticated user to read posts in private channels they don't have access to via guessing the PendingPostID of recently created posts.
References
Impacted products
Vendor Product Version
Mattermost Mattermost Version: 10.5.0   ≤ 10.5.6
Version: 10.8.0   ≤ 10.8.1
Version: 10.7.0   ≤ 10.7.3
Version: 9.11.0   ≤ 9.11.16
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