Headline
GHSA-3q4q-wqm6-hvf3: Mattermost has a Missing Authorization vulnerability
Mattermost versions 10.10.x <= 10.10.2, 10.5.x <= 10.5.10, 10.11.x <= 10.11.2 fail to validate email ownership during Slack import process which allows attackers to create verified user accounts with arbitrary email domains via malicious Slack import data to bypass email-based team access restrictions.
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- GitHub Advisory Database
- GitHub Reviewed
- CVE-2025-41410
Mattermost has a Missing Authorization vulnerability
Moderate severity GitHub Reviewed Published Oct 16, 2025 to the GitHub Advisory Database • Updated Oct 16, 2025
Package
gomod github.com/mattermost/mattermost-server (Go)
Affected versions
>= 10.10.0, < 10.10.3
>= 10.5.0, < 10.5.11
>= 10.11.0, < 10.11.3
Patched versions
10.10.3
10.5.11
10.11.3
gomod github.com/mattermost/mattermost/server/v8 (Go)
< 8.0.0-20250822083415-01b95392a450
8.0.0-20250822083415-01b95392a450
Description
Published to the GitHub Advisory Database
Oct 16, 2025
Last updated
Oct 16, 2025
EPSS score