CVE-2021-33604: Improper Neutralization

June 28, 2021 (updated October 5, 2021)

URL encoding error in development mode handler in com.vaadin:flow-server versions 2.0.0 through 2.6.1 (Vaadin 14.0.0 through 14.6.1), 3.0.0 through 6.0.9 (Vaadin 15.0.0 through 19.0.8) allows local user to execute arbitrary JavaScript code by opening crafted URL in browser.

References

github.com/advisories/GHSA-c99r-67x4-whj6
github.com/vaadin/flow/pull/11099
github.com/vaadin/platform/security/advisories/GHSA-c99r-67x4-whj6
nvd.nist.gov/vuln/detail/CVE-2021-33604
vaadin.com/security/cve-2021-33604

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