CVE-2026-3112CWE-22

Arbitrary File Read via Advanced Logging Support Packet

Medium · published March 26, 2026

CVSS v3.1
6.8
EPSS
0%
Percentile
40.0
In the wild
Unconfirmed
What it is

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

The record
Technical detail
CVSS v3.1
6.8 · MEDIUM
Vector
CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:C/C:H/I:N/A:N
CVSS v4.0
Not supplied
EPSS
0.00474 · 40.0th percentile
Weakness
CWE-22 · Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal')
Published
2026-03-26T16:29Z
EPSS history
Timeline
  • 26 MAR 16:29Z
    Arbitrary File Read via Advanced Logging Support Packet
    cvelistv5