CVEvulnerability

CVE-2026-2454

8.6 HIGH Published 2026-03-16 Modified 2026-06-17 Official page ↗
Status
Analyzed
Published
2026-03-16
Last modified
2026-06-17
Assigner
[email protected]
CVSS 3.1 ([email protected])
5.8 MEDIUM — CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:N/I:N/A:L
CVSS 3.1 ([email protected])
8.6 HIGH — CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:N/I:N/A:H
Weaknesses
CWE-1287

Description

Mattermost versions 11.3.x <= 11.3.0, 11.2.x <= 11.2.2, 10.11.x <= 10.11.10 fail to handle incorrectly reported array lengths which allows malicious user to cause OOM errors and crash the server via sending corrupted msgpack frames within websocket messages to calls plugin. Mattermost Advisory ID: MMSA-2025-00537

Affected configurations

• mattermost mattermost server (>= 10.11.0 < 10.11.11) • mattermost mattermost server (>= 11.2.0 < 11.2.3) • mattermost mattermost server (>= 11.3.0 < 11.3.1)

Related

Weakness · CWE (1)

  • CWE-1287 Improper Validation of Specified Type of Input weakness

References