Vulnerability Details CVE-2020-35217
Vert.x-Web framework v4.0 milestone 1-4 does not perform a correct CSRF verification. Instead of comparing the CSRF token in the request with the CSRF token in the cookie, it compares the CSRF token in the cookie against a CSRF token that is stored in the session. An attacker does not even need to provide a CSRF token in the request because the framework does not consider it. The cookies are automatically sent by the browser and the verification will always succeed, leading to a successful CSRF attack.
Exploit prediction scoring system (EPSS) score
EPSS Score 0.002
EPSS Ranking 37.3%
CVSS Severity
CVSS v3 Score 8.8
CVSS v2 Score 6.8
References
Products affected by CVE-2020-35217
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cpe:2.3:a:eclipse:vert.x-web:4.0.0