CVE-2026-2463

Mattermost versions 11.3.x <= 11.3.0, 11.2.x <= 11.2.2, 10.11.x <= 10.11.10 fail to filter invite IDs based on user permissions, which allows regular users to bypass access control restrictions and register unauthorized accounts via leaked invite IDs during team creation.. Mattermost Advisory ID: MMSA-2025-00565

Score

CVSS 3.1 4.3 Medium

Status

Analyzed - responsibledisclosure@mattermost.com

Published

2026-03-16

Last modified

2026-03-16

Weaknesses

CWE-862

Affected products

• Mattermost (Mattermost)
• Mattermost Server (Mattermost)

References

• https://mattermost.com/security-updates