medium5.4
CVE-2025-41410
Mattermost has a Missing Authorization vulnerability
Impact
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.
Affected packages
| Ecosystem | Package | Affected | Fixed in |
|---|---|---|---|
| go | github.com/mattermost/mattermost/server/v8 | < 8.0.0-20250822083415-01b95392a450 | 8.0.0-20250822083415-01b95392a450 |
| go | github.com/mattermost/mattermost-server | >= 10.10.0, < 10.10.3 | 10.10.3 |
Affected products
| Vendor | Product | Affected versions |
|---|---|---|
| Mattermost | Mattermost Server | from 10.5.0 before 10.5.11 from 10.10.0 before 10.10.3 from 10.11.0 before 10.11.3 |
Weakness classification
References
- NVD record
- CVE.org record
- GitHub advisory
- https://mattermost.com/security-updates
- https://github.com/advisories/GHSA-3q4q-wqm6-hvf3
- https://nvd.nist.gov/vuln/detail/CVE-2025-41410
- https://github.com/mattermost/mattermost/commit/01b95392a450676407475596d1c041a047067329
- https://github.com/mattermost/mattermost/commit/0d6e8fa2e4681a172a136db18001104a57f9c28e
- https://github.com/mattermost/mattermost/commit/ef896a4ea60cacbe03124106e1f42e5c25276427