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Mend.io Vulnerability Database
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CVE-2025-9078
Good to know:
Date: September 15, 2025
Mattermost versions 10.8.x <= 10.8.3, 10.5.x <= 10.5.8, 9.11.x <= 9.11.17, 10.10.x <= 10.10.1, 10.9.x <= 10.9.3 fail to properly validate cache keys for link metadata which allows authenticated users to access unauthorized posts and poison link previews via hash collision attacks on FNV-1 hashing
Severity Score
Related Resources (9)
Severity Score
Weakness Type (CWE)
Use of Weak Hash
CWE-328Top Fix
Upgrade Version
Upgrade to version github.com/mattermost/mattermost - v9.11.18;github.com/mattermost/mattermost - v10.5.9;github.com/mattermost/mattermost - v10.8.4;github.com/mattermost/mattermost - v10.10.2;github.com/mattermost/mattermost - v10.9.4;github.com/mattermost/mattermost-server - v10.8.4;github.com/mattermost/mattermost-server - v10.5.9;github.com/mattermost/mattermost-server - v9.11.18;github.com/mattermost/mattermost-server - v10.10.2;github.com/mattermost/mattermost-server - v10.9.4;github.com/mattermost/mattermost/server/v8 - v8.0.0-20250718075842-cd87e5c87737
CVSS v3.1
| Base Score: |
|
|---|---|
| Attack Vector (AV): | NETWORK |
| Attack Complexity (AC): | LOW |
| Privileges Required (PR): | LOW |
| User Interaction (UI): | NONE |
| Scope (S): | UNCHANGED |
| Confidentiality (C): | LOW |
| Integrity (I): | NONE |
| Availability (A): | NONE |