What’s Vulnerable › Vulnerabilities
CVE-2025-22449: Access control flaw for team admins allows unauthorized team additions
- Severity: low (CVSS 3.8 v3.1)
- Exploited in the wild: not listed in CISA KEV
- EPSS: 0.3% probability of exploitation in the next 30 days
- Public exploit or detection template: none known
- Published: 2025-01-09 · updated 2026-06-17
- Weakness: CWE-863
Description
Mattermost versions 9.11.x <= 9.11.5 fail to enforce invite permissions, which allows team admins, with no permission to invite users to their team, to invite users by updating the "allow_open_invite" field via making their team public.
Affected products
- Mattermost: from 9.11.0 before 9.11.6 — fixed in 9.11.6
How to fix
Upgrade to a fixed version: Mattermost 9.11.6. Check the vendor advisory for mitigations.
References
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