Back to Database
Status published
Low
CVE-2021-37862
Mattermost 6.0 and earlier fails to sufficiently validate the email...
Vulnerability Description
Mattermost 6.0 and earlier fails to sufficiently validate the email address during registration, which allows attackers to trick users into signing up using attacker-controlled email addresses via crafted invitation token.
Impact Analysis
Refer to official advisory for detailed impact metrics.
Remediation
Ensure systems are updated to the latest vendor-supplied patch levels.
THREAT MONITOR
Am I Vulnerable?
Launch our assessment wizard to check if your infrastructure is exposed to • CVE-2021-37862
Credits & Attribution
No credits recorded in the NVD database.
More from Mattermost
View All →CVE-2025-9084
Open redirect in OAuth login
Low
3.1
CVE-2025-9081
IDOR in board file download allows any user to download any file by UUID
Low
3.1
CVE-2025-9079
Admin RCE via prepackaged plugins by way of misconfigured imports directory
High
8
CVE-2025-9078
Weak cache keys lead to post IDOR and link preview poisoning
Medium
4.3
CVE-2025-9076
Mattermost Server exposes sensitive user credentials during shared channel membership synchronization
Medium
6.5
Affected Vendor
Mattermost
View all reports →Affected Software
Mattermost
Vulnerable Versions:
unspecified
Timeline
Official Publish:
December 17th, 2021
Last Modified:
August 4th, 2024
Added to House:
July 21st, 2026
CVSS Vectors
V3:
CVSS:3.1/AV:N/AC:H/PR:L/UI:R/S:U/C:L/I:L/A:N