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

Code Behaviors & Features

Detect and mitigate CVE-2021-20293 with GitLab Dependency Scanning

Secure your software supply chain by verifying that all open source dependencies used in your projects contain no disclosed vulnerabilities. Dependency Scanning using SBOM also detects vulnerabilities from proprietary advisories that this site does not include. Learn more about Dependency Scanning using SBOM →