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.
AI Insight
LLM-synthesized narrative grounded in this CVE's description and references.
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
3- ghsa-coords2 versionspkg:golang/github.com/mattermost/mattermost-serverpkg:golang/github.com/mattermost/mattermost/server/v8
>= 10.8.0, < 10.8.4+ 1 more
- (no CPE)range: >= 10.8.0, < 10.8.4
- (no CPE)range: < 8.0.0-20250708173752-d6b35c41f0ae5
- Range: 10.8.0
Patches
Vulnerability mechanics
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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