Incorrect permission assignment for critical resource in Mattermost Server - CVE-2018-21252
Published: June 19, 2020 / Updated: July 17, 2020
Vulnerability identifier: #VU30221
CSH Severity: Low
CVSS v4: 5.3 [CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:N/VI:L/VA:N/SC:N/SI:N/SA:N]
CVE-ID: CVE-2018-21252
CWE-ID: CWE-732
Exploitation vector: Remote access
Exploit availability:
No public exploit available
Vulnerability details
The vulnerability allows a remote authenticated user to manipulate data.
An issue was discovered in Mattermost Server before 5.2, 5.1.1, 5.0.3, and 4.10.3. Attackers could use multiple e-mail addresses to bypass a domain-based policy for signups.
Affected software
Mattermost Server
How to mitigate CVE-2018-21252
Install update from vendor's website.
Mattermost Server - update to 5.1.1