CVEvulnerability

CVE-2025-20621

7.5 HIGH Published 2025-01-16 Modified 2026-06-17 Official page ↗
Status
Analyzed
Published
2025-01-16
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
CVSS 3.1 ([email protected])
7.5 HIGH — CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Weaknesses
CWE-1287

Description

Mattermost versions 10.2.x <= 10.2.0, 9.11.x <= 9.11.5, 10.0.x <= 10.0.3, 10.1.x <= 10.1.3 fail to properly handle posts with attachments containing fields that cannot be cast to a String, which allows an attacker to cause the webapp to crash via creating and sending such a post to a channel.

Affected configurations

• mattermost mattermost server (>= 9.11.0 < 9.11.6) • mattermost mattermost server (>= 10.0.0 < 10.0.4) • mattermost mattermost server (>= 10.1.0 < 10.1.4) • mattermost mattermost server 10.2.0

Related

Weakness · CWE (1)

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

References