Moderate severityNVD Advisory· Published Aug 21, 2025· Updated Aug 21, 2025
Path Traversal in Template Upload Allows Uploading Files Outside Target Directory
CVE-2025-8023
Description
Mattermost versions 10.8.x <= 10.8.3, 10.5.x <= 10.5.8, 9.11.x <= 9.11.17, 10.9.x <= 10.9.2 fails to sanitize path traversal sequences in template file destination paths, which allows a system admin to perform path traversal attacks via malicious path components, potentially enabling malicious file placement outside intended directories.
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 | >= 9.11.0, < 9.11.18 | 9.11.18 |
github.com/mattermost/mattermost-serverGo | >= 10.9.0, < 10.9.3 | 10.9.3 |
github.com/mattermost/mattermost/server/v8Go | < 8.0.0-20250708065844-b38e2eccda18 | 8.0.0-20250708065844-b38e2eccda18 |
github.com/mattermost/mattermost-server/v5Go | <= 5.39.5 | — |
github.com/mattermost/mattermost-server/v6Go | <= 6.7.2 | — |
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-x67c-v8jr-p29rghsaADVISORY
- nvd.nist.gov/vuln/detail/CVE-2025-8023ghsaADVISORY
- mattermost.com/security-updatesghsaWEB
- pkg.go.dev/vuln/GO-2025-3907ghsaWEB
News mentions
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