CVE-2021-31404: Information Exposure Through Discrepancy

April 23, 2021 (updated April 30, 2021)

A non-constant-time comparison of CSRF tokens in UIDL request handler in com.vaadin:flow-server allows attackers to guess a security token via a timing attack.

References

nvd.nist.gov/vuln/detail/CVE-2021-31404
vaadin.com/security/cve-2021-31404

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