PT-2026-51314 · Mattermost · Mattermost
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Published
2026-06-22
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Updated
2026-06-22
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CVE-2026-6062
CVSS v3.1
6.4
Medium
| Vector | AV:N/AC:H/PR:L/UI:N/S:U/C:H/I:L/A:L |
Mattermost versions 11.7.x <= 11.7.0, 11.6.x <= 11.6.2, 11.5.x <= 11.5.5, 10.11.x <= 10.11.17 Fail to validate channel ownership of an existing subscription before applying edits which allows an authenticated attacker to hijack subscriptions from channels they have no access to via a crafted PUT request to the subscription edit endpoint.. Mattermost Advisory ID: MMSA-2026-00650
Fix
IDOR
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Weakness Enumeration
Related Identifiers
Affected Products
Mattermost