CVE catalog
CVE-2026-3112
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 h
- Severity
- Medium · CVSS 6.8
CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:C/C:H/I:N/A:N - Published
- Source
- [NVD] · [CVE record]
- EPSS
- 0.44% · Oct 25, 2026
A flaw was found in Mattermost. This vulnerability allows a system administrator to read arbitrary files on the host system. This is possible due to a failure to properly validate Advanced Logging file target paths, which can be exploited by providing a malicious AdvancedLoggingJSON configuration during support packet generation. This could lead to the disclosure of sensitive information. Red Hat Product Security has determined that this vulnerability does not affect any currently supported Red Hat product. This assessment may evolve based on further analysis and discovery. For more information about this vulnerability and the products it affects, please see the linked references. The CVSS score(s) listed for this vulnerability do not reflect the associated product's status, and are included for informational purposes to better understand the severity of this vulnerability.
Vulnerable and fixed packages
Distribution-reported package versions and fixes. These do not depend on matching against the OpenFactory package catalog.
| Distribution | Package | Release | Version | Status |
|---|---|---|---|---|
| Cpe | mattermost_server | Not reported | 10.11.12 | fixed |
| Cpe | mattermost_server | Not reported | 11.2.4 | fixed |
| Cpe | mattermost_server | Not reported | 11.3.2 | fixed |
| Cpe | mattermost_server | Not reported | Not reported | unknown |
Fixed-version evidence
| Distribution | Package | Type | Release | Fixed version | Urgency | Origin | Bugs |
|---|---|---|---|---|---|---|---|
| Cpe | mattermost_server | cpe | Not reported | 10.11.12 | Not reported | Not reported | Not reported |
| Cpe | mattermost_server | cpe | Not reported | 11.2.4 | Not reported | Not reported | Not reported |
| Cpe | mattermost_server | cpe | Not reported | 11.3.2 | Not reported | Not reported | Not reported |
OpenFactory catalog packages
No matching packages in this catalog.
Observed: