CVE-2026-3112
Received
Received - Intake
Path Traversal in Mattermost Advanced Logging Allows File Disclosure
Publication date: 2026-03-26
Last updated on: 2026-03-30
Assigner: Mattermost, Inc.
Description
Description
Mattermost versions 11.4.x <= 11.4.0, 11.3.x <= 11.3.1, 11.2.x <= 11.2.3, 10.11.x <= 10.11.11 fail to validate Advanced Logging file target paths which allows system administrators to read arbitrary host files via malicious AdvancedLoggingJSON configuration in support packet generation. Mattermost Advisory ID: MMSA-2025-00562
CVSS Scores
EPSS Scores
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Meta Information
Affected Vendors & Products
| Vendor | Product | Version / Range |
|---|---|---|
| mattermost | mattermost_server | From 10.11.0 (inc) to 10.11.12 (exc) |
| mattermost | mattermost_server | From 11.2.0 (inc) to 11.2.4 (exc) |
| mattermost | mattermost_server | From 11.3.0 (inc) to 11.3.2 (exc) |
| mattermost | mattermost_server | 11.4.0 |
Helpful Resources
Exploitability
CWE
KEV
| CWE ID | Description |
|---|---|
| CWE-22 | The product uses external input to construct a pathname that is intended to identify a file or directory that is located underneath a restricted parent directory, but the product does not properly neutralize special elements within the pathname that can cause the pathname to resolve to a location that is outside of the restricted directory. |
