CVE-2025-9078
published 2025-09-15CVE-2025-9078: 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…
PriorityP422medium4.3CVSS 3.1
AVNACLPRLUINSUCLINAN
EPSS
0.14%
3.8th percentile
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
Affected
21 ranges
| Vendor | Product | Version range | Fixed in |
|---|---|---|---|
| github.com | mattermost_mattermost-server | >= 10.10.0 < 10.10.2 | 10.10.2 |
| github.com | mattermost_mattermost-server | >= 10.10.0+incompatible < 10.10.2+incompatible | 10.10.2+incompatible |
| github.com | mattermost_mattermost-server | >= 10.5.0 < 10.5.9 | 10.5.9 |
| github.com | mattermost_mattermost-server | >= 10.5.0+incompatible < 10.5.9+incompatible | 10.5.9+incompatible |
| github.com | mattermost_mattermost-server | >= 10.8.0 < 10.8.4 | 10.8.4 |
| github.com | mattermost_mattermost-server | >= 10.8.0+incompatible < 10.8.4+incompatible | 10.8.4+incompatible |
| github.com | mattermost_mattermost-server | >= 10.9.0 < 10.9.4 | 10.9.4 |
| github.com | mattermost_mattermost-server | >= 10.9.0+incompatible < 10.9.4+incompatible | 10.9.4+incompatible |
| github.com | mattermost_mattermost-server | >= 9.11.0 < 9.11.18 | 9.11.18 |
| github.com | mattermost_mattermost-server | >= 9.11.0+incompatible < 9.11.18+incompatible | 9.11.18+incompatible |
| github.com | mattermost_mattermost_server_v8 | >= 0 < 8.0.0-20250718075842-cd87e5c87737 | 8.0.0-20250718075842-cd87e5c87737 |
| mattermost | mattermost | 10.10.0 – 10.10.1 | — |
| mattermost | mattermost | 10.5.0 – 10.5.8 | — |
| mattermost | mattermost | 10.8.0 – 10.8.3 | — |
| mattermost | mattermost | 10.9.0 – 10.9.3 | — |
| mattermost | mattermost | 9.11.0 – 9.11.17 | — |
| mattermost | mattermost_server | >= 10.10.0 < 10.10.2 | 10.10.2 |
| mattermost | mattermost_server | >= 10.5.0 < 10.5.9 | 10.5.9 |
| mattermost | mattermost_server | >= 10.8.0 < 10.8.4 | 10.8.4 |
| mattermost | mattermost_server | >= 10.9.0 < 10.9.4 | 10.9.4 |
| mattermost | mattermost_server | >= 9.11.0 < 9.11.18 | 9.11.18 |
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OSV
Mattermost makes Use of Weak Hash in github.com/mattermost/mattermost-server
osv·2025-09-17
CVE-2025-9078 Mattermost makes Use of Weak Hash in github.com/mattermost/mattermost-server
Mattermost makes Use of Weak Hash in github.com/mattermost/mattermost-server
Mattermost makes Use of Weak Hash in github.com/mattermost/mattermost-server
OSV
Mattermost makes Use of Weak Hash
osv·2025-09-15
CVE-2025-9078 [MEDIUM] Mattermost makes Use of Weak Hash
Mattermost makes Use of Weak Hash
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.
GHSA
Mattermost makes Use of Weak Hash
ghsa·2025-09-15
CVE-2025-9078 [MEDIUM] CWE-328 Mattermost makes Use of Weak Hash
Mattermost makes Use of Weak Hash
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.
No detection rules found.
No public exploits indexed.
No writeups or analysis indexed.
2025-09-15
Published