cve/2025/CVE-2025-20621.md
2025-09-29 21:09:30 +02:00

1.2 KiB

CVE-2025-20621

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.

POC

Reference

Github