CVE-2025-58075
Arbitrary Mattermost Team can be joined by manipulating the SAML RelayState
CVSS Score
8.1
EPSS Score
0.0%
EPSS Percentile
0th
Mattermost versions 10.11.x <= 10.11.1, 10.10.x <= 10.10.2, 10.5.x <= 10.5.10 fail to verify a user has permission to join a Mattermost team using the original invite token which allows any attacked to join any team on a Mattermost server regardless of restrictions via manipulating the RelayState
| CWE | CWE-862 |
| Vendor | mattermost |
| Product | mattermost |
| Published | Oct 16, 2025 |
| Last Updated | Feb 26, 2026 |
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CVSS v3 Breakdown
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:N Attack Vector
Network
Attack Complexity
Low
Privileges Required
Low
User Interaction
None
Scope
Unchanged
Confidentiality
High
Integrity
High
Availability
None
Affected Versions
Mattermost / Mattermost
10.11.0 ≤ 10.11.1 10.10.0 ≤ 10.10.2 10.5.0 ≤ 10.5.10
Credits
DoyenSec