CVE-2026-25780CWE-789

Memory Exhaustion via Malformed DOC File Upload

Medium · published March 16, 2026

CVSS v3.1
4.3
EPSS
0%
Percentile
30.9
In the wild
Unconfirmed
What it is

Mattermost versions 11.3.x <= 11.3.0, 11.2.x <= 11.2.2, 10.11.x <= 10.11.10 fail to bound memory allocation when processing DOC files which allows an authenticated attacker to cause server memory exhaustion and denial of service via uploading a specially crafted DOC file.. Mattermost Advisory ID: MMSA-2026-00581

The record
Technical detail
CVSS v3.1
4.3 · MEDIUM
Vector
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:L
CVSS v4.0
Not supplied
EPSS
0.00382 · 30.9th percentile
Weakness
CWE-789 · Memory Allocation with Excessive Size Value
Published
2026-03-16T12:59Z
EPSS history
Timeline
  • 16 MAR 12:59Z
    Memory Exhaustion via Malformed DOC File Upload
    cvelistv5