Cross-site request forgery in Mattermost Server - CVE-2017-18903
Published: June 19, 2020 / Updated: July 17, 2020
Vulnerability identifier: #VU30214
CSH Severity: Medium
CVSS v4: 4.6 [CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:A/VC:L/VI:L/VA:N/SC:N/SI:N/SA:N]
CVE-ID: CVE-2017-18903
CWE-ID: CWE-352
Exploitation vector: Remote access
Exploit availability:
No public exploit available
Vulnerability details
The vulnerability allows a remote attacker to perform cross-site request forgery attacks.
The vulnerability exists due to insufficient validation of the HTTP request origin. A remote attacker can trick the victim to visit a specially crafted web page and perform arbitrary actions on behalf of the victim on the vulnerable website, such as occur if CORS is enabled.
Affected software
Mattermost Server
How to mitigate CVE-2017-18903
Update to version 3.10.2.
Mattermost Server - update to 3.10.2