CVEvulnerability

CVE-2026-3114

6.5 MEDIUM Published 2026-03-26 Modified 2026-06-17 Official page ↗
Status
Analyzed
Published
2026-03-26
Last modified
2026-06-17
Assigner
[email protected]
CVSS 3.1 ([email protected])
6.5 MEDIUM — CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
Weaknesses
CWE-409

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 decompressed archive entry sizes during file extraction which allows authenticated users with file upload permissions to cause a denial of service via crafted zip archives containing highly compressed entries (zip bombs) that exhaust server memory.. Mattermost Advisory ID: MMSA-2026-00598

Affected configurations

• mattermost mattermost server (>= 10.11.0 < 10.11.12) • mattermost mattermost server (>= 11.2.0 < 11.2.4) • mattermost mattermost server (>= 11.3.0 < 11.3.2) • mattermost mattermost server 11.4.0

Related

Weakness · CWE (1)

  • CWE-409 Improper Handling of Highly Compressed Data (Data Amplification) weakness

References