CVE-2025-9078
MEDIUM EPSS 3.8%
Published Sep 15, 20259mo ago · Modified Jun 17, 20261w ago
4.3 CVSS 3.1
Published Sep 15, 2025 9mo ago
Last Modified Jun 17, 2026 1w ago
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
CVSS Details
Base Score
Exploitability
Impact
Vector string
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N Attack Vector Network
Attack Complexity Low
Privileges Required Low
User Interaction None
Scope Unchanged
Confidentiality Low
Integrity None
Availability None
Threat Intelligence
EPSS Exploit Probability
3.8% percentile
Exploit & Patch Status
No Known Exploit
No Patch Available
Weaknesses 1
CWE-328
Affected Products 5
| Vendor | Product | Version | Range |
|---|---|---|---|
| mattermost | mattermost_server | * | ≥9.11.0 – <9.11.18 |
| mattermost | mattermost_server | * | ≥10.5.0 – <10.5.9 |
| mattermost | mattermost_server | * | ≥10.8.0 – <10.8.4 |
| mattermost | mattermost_server | * | ≥10.9.0 – <10.9.4 |
| mattermost | mattermost_server | * | ≥10.10.0 – <10.10.2 |
References 1
- mattermost.com https://mattermost.com/security-updates
Remediation
No remediation data recorded yet
Check vendor advisories and the NVD entry for patch availability.