CVE-2026-3112

MediumCVSS 4.9/10Last modified Jun 17, 2026

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

Metrics

CVSS 3.1 4.9/10CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:N/A:N

Weakness enumeration

CWE-22

Affected software

Vendor	Product	Versions
Mattermost	Mattermost	>= 11.4.0, <= 11.4.0; >= 11.3.0, <= 11.3.1; >= 11.2.0, <= 11.2.3; >= 10.11.0, <= 10.11.11

References

https://mattermost.com/security-updatesVendor Advisory

Timeline

Published: Mar 26, 2026
Last modified: Jun 17, 2026
NVD status: Analyzed

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