CVE-2025-8402CWE-1287CWE-476

Nil pointer dereference in bulk import crashes server

Medium · published August 21, 2025

CVSS v3.1
4.9
EPSS
0%
Percentile
23.8
In the wild
Unconfirmed
What it is

Mattermost versions 10.8.x <= 10.8.3, 10.5.x <= 10.5.8, 9.11.x <= 9.11.17, 10.10.x <= 10.10.0, 10.9.x <= 10.9.3 fail to validate import data which allows a system admin to crash the server via the bulk import feature.

The record
Technical detail
CVSS v3.1
4.9 · MEDIUM
Vector
CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:N/I:N/A:H
CVSS v4.0
Not supplied
EPSS
0.00321 · 23.8th percentile
Weaknesses
CWE-1287 · Improper Validation of Specified Type of Input; CWE-476 · NULL Pointer Dereference
Published
2025-08-21T17:01Z
EPSS history
Timeline
  • 21 AUG 17:01Z
    Nil pointer dereference in bulk import crashes server
    cvelistv5