Moderate severityNVD Advisory· Published Aug 21, 2025· Updated Aug 21, 2025
Path traversal in image upload with preview overwrite
CVE-2025-6465
Description
Mattermost versions 10.8.x <= 10.8.3, 10.5.x <= 10.5.8, 10.10.x <= 10.10.0, 10.9.x <= 10.9.3 fail to sanitize file names which allows users with file upload permission to overwrite file attachment thumbnails via path traversal in file streaming APIs.
Affected packages
Versions sourced from the GitHub Security Advisory.
| Package | Affected versions | Patched versions |
|---|---|---|
github.com/mattermost/mattermost-serverGo | >= 10.8.0, < 10.8.4 | 10.8.4 |
github.com/mattermost/mattermost-serverGo | >= 10.5.0, < 10.5.9 | 10.5.9 |
github.com/mattermost/mattermost-serverGo | >= 10.9.0, < 10.9.4 | 10.9.4 |
github.com/mattermost/mattermost-serverGo | >= 10.10.0, < 10.10.1 | 10.10.1 |
github.com/mattermost/mattermost/server/v8Go | < 8.0.0-20250708173752-d6b35c41f0ae5 | 8.0.0-20250708173752-d6b35c41f0ae5 |
Affected products
1- Range: 10.8.0
Patches
0No patches discovered yet.
Vulnerability mechanics
AI mechanics synthesis has not run for this CVE yet.
References
4- github.com/advisories/GHSA-pj6f-rc94-gw53ghsaADVISORY
- nvd.nist.gov/vuln/detail/CVE-2025-6465ghsaADVISORY
- mattermost.com/security-updatesghsaWEB
- pkg.go.dev/vuln/GO-2025-3906ghsaWEB
News mentions
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