CVE-2021-31408: Insufficient Session Expiration

April 22, 2021 (updated May 5, 2021)

Authentication.logout() helper in com.vaadin:flow-client versions 5.0.0 prior to 6.0.0 (Vaadin 18), and 6.0.0 through 6.0.4 (Vaadin 19.0.0 through 19.0.3) uses incorrect HTTP method, which, in combination with Spring Security CSRF protection, allows local attackers to access Fusion endpoints after the user attempted to log out.

References

github.com/advisories/GHSA-mr8h-j9cv-4m8h
github.com/vaadin/flow/pull/10577
github.com/vaadin/platform/security/advisories/GHSA-mr8h-j9cv-4m8h
nvd.nist.gov/vuln/detail/CVE-2021-31408
vaadin.com/security/cve-2021-31408

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