PT-2026-42404 · Mattermost · Mattermost
0X7Oda7123
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Published
2026-05-21
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Updated
2026-05-21
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CVE-2026-4055
CVSS v3.1
4.3
Medium
| Vector | AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:N |
Mattermost versions 11.5.x <= 11.5.1 fail to validate team-level run create permission against the target team when creating a playbook run which allows an authenticated team member to create runs in teams where they lack permission via specifying a different team ID in the run creation API request. Mattermost Advisory ID: MMSA-2026-00629
Fix
Incorrect Authorization
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Weakness Enumeration
Related Identifiers
Affected Products
Mattermost