CVE-2021-20293: Cross-site Scripting

June 10, 2021 (updated September 20, 2021)

A reflected Cross-Site Scripting (XSS) flaw was found in RESTEasy. It does not properly handle URL encoding when calling @javax.ws.rs.PathParam without any @Produces MediaType. This flaw allows an attacker to launch a reflected XSS attack. The highest threat from this vulnerability is to data confidentiality and integrity.

References

bugzilla.redhat.com/show_bug.cgi?id=1942819
nvd.nist.gov/vuln/detail/CVE-2021-20293

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