Jofra

**Name of the Vulnerable Software and Affected Versions** Mattermost versions 9.5.x through 9.5.11 Mattermost versions 9.11.x through 9.11.3 Mattermost versions 10.0.x through 10.0.1 Mattermost versions 10.1.x through 10.1.1 **Description** The issue is related to the improper validation of email addresses, which allows an unauthenticated user to bypass email domain restrictions via carefully crafted input on email registration. This can enable remote attacks. **Recommendations** For Mattermost versions 9.5.x through 9.5.11, upgrade to a version higher than 9.5.11 to patch the issue. For Mattermost versions 9.11.x through 9.11.3, upgrade to a version higher than 9.11.3 to patch the issue. For Mattermost versions 10.0.x through 10.0.1, upgrade to a version higher than 10.0.1 to patch the issue. For Mattermost versions 10.1.x through 10.1.1, upgrade to a version higher than 10.1.1 to patch the issue.