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
                
            Metrics
Affected Vendors & Products
References
        | Link | Providers | 
|---|---|
| https://mattermost.com/security-updates | 
                     | 
            
History
                    Wed, 17 Sep 2025 11:00:00 +0000
| Type | Values Removed | Values Added | 
|---|---|---|
| First Time appeared | 
        
        Mattermost mattermost
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| Vendors & Products | 
        
        Mattermost mattermost
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Tue, 16 Sep 2025 16:00:00 +0000
| Type | Values Removed | Values Added | 
|---|---|---|
| First Time appeared | 
        
        Mattermost
         Mattermost mattermost Server  | 
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| CPEs | cpe:2.3:a:mattermost:mattermost_server:*:*:*:*:*:*:*:* | |
| Vendors & Products | 
        
        Mattermost
         Mattermost mattermost Server  | 
Mon, 15 Sep 2025 14:15:00 +0000
| Type | Values Removed | Values Added | 
|---|---|---|
| Metrics | 
        
        ssvc
         
  | 
Mon, 15 Sep 2025 10:15:00 +0000
| Type | Values Removed | Values Added | 
|---|---|---|
| Description | 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 | |
| Title | Weak cache keys lead to post IDOR and link preview poisoning | |
| Weaknesses | CWE-328 | |
| References | 
         | |
| Metrics | 
        
        cvssV3_1
         
  | 
Status: PUBLISHED
Assigner: Mattermost
Published: 2025-09-15T10:10:06.886Z
Updated: 2025-09-15T13:57:49.086Z
Reserved: 2025-08-15T15:34:54.442Z
Link: CVE-2025-9078
Updated: 2025-09-15T13:53:39.946Z
Status : Analyzed
Published: 2025-09-15T10:15:32.627
Modified: 2025-09-16T15:58:12.830
Link: CVE-2025-9078
No data.