{"id":"UBUNTU-CVE-2021-20293","details":"A reflected Cross-Site Scripting (XSS) flaw was found in RESTEasy in all versions of RESTEasy up to 4.6.0.Final, where it did 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is to data confidentiality and integrity.","modified":"2025-07-14T06:45:31.824383Z","published":"2021-06-10T12:15:00Z","withdrawn":"2025-07-16T16:53:08Z","upstream":["CVE-2021-20293"],"references":[{"type":"REPORT","url":"https://ubuntu.com/security/CVE-2021-20293"},{"type":"REPORT","url":"https://bugzilla.redhat.com/show_bug.cgi?id=1942819"},{"type":"REPORT","url":"https://www.cve.org/CVERecord?id=CVE-2021-20293"}],"affected":[{"package":{"name":"resteasy","ecosystem":"Ubuntu:Pro:16.04:LTS","purl":"pkg:deb/ubuntu/resteasy@3.0.6-3ubuntu0.1~esm1?arch=source&distro=esm-apps/xenial"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["3.0.6-3","3.0.6-3ubuntu0.1~esm1"],"database_specific":{"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2021/UBUNTU-CVE-2021-20293.json"}},{"package":{"name":"resteasy3.0","ecosystem":"Ubuntu:Pro:18.04:LTS","purl":"pkg:deb/ubuntu/resteasy3.0@3.0.26-1~18.04.1~esm1?arch=source&distro=esm-apps/bionic"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["3.0.19-1","3.0.19-2","3.0.26-1~18.04","3.0.26-1~18.04.1~esm1"],"database_specific":{"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2021/UBUNTU-CVE-2021-20293.json"}},{"package":{"name":"resteasy","ecosystem":"Ubuntu:Pro:20.04:LTS","purl":"pkg:deb/ubuntu/resteasy@3.6.2-2ubuntu0.20.04.1~esm1?arch=source&distro=esm-apps/focal"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["3.6.2-2","3.6.2-2ubuntu0.20.04.1~esm1"],"database_specific":{"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2021/UBUNTU-CVE-2021-20293.json"}},{"package":{"name":"resteasy3.0","ecosystem":"Ubuntu:Pro:20.04:LTS","purl":"pkg:deb/ubuntu/resteasy3.0@3.0.26-1ubuntu0.1~esm1?arch=source&distro=esm-apps/focal"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["3.0.26-1","3.0.26-1ubuntu0.1~esm1"],"database_specific":{"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2021/UBUNTU-CVE-2021-20293.json"}},{"package":{"name":"resteasy","ecosystem":"Ubuntu:22.04:LTS","purl":"pkg:deb/ubuntu/resteasy@3.6.2-2?arch=source&distro=jammy"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["3.6.2-2"],"database_specific":{"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2021/UBUNTU-CVE-2021-20293.json"}},{"package":{"name":"resteasy3.0","ecosystem":"Ubuntu:22.04:LTS","purl":"pkg:deb/ubuntu/resteasy3.0@3.0.26-3ubuntu0.1?arch=source&distro=jammy"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["3.0.26-2","3.0.26-3","3.0.26-3ubuntu0.1"],"database_specific":{"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2021/UBUNTU-CVE-2021-20293.json"}},{"package":{"name":"resteasy","ecosystem":"Ubuntu:24.04:LTS","purl":"pkg:deb/ubuntu/resteasy@3.6.2-2?arch=source&distro=noble"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["3.6.2-2"],"database_specific":{"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2021/UBUNTU-CVE-2021-20293.json"}},{"package":{"name":"resteasy3.0","ecosystem":"Ubuntu:24.04:LTS","purl":"pkg:deb/ubuntu/resteasy3.0@3.0.26-6ubuntu0.24.04.1?arch=source&distro=noble"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["3.0.26-6","3.0.26-6ubuntu0.24.04.1"],"database_specific":{"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2021/UBUNTU-CVE-2021-20293.json"}},{"package":{"name":"resteasy","ecosystem":"Ubuntu:25.04","purl":"pkg:deb/ubuntu/resteasy@3.6.2-3ubuntu0.25.04.1?arch=source&distro=plucky"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["3.6.2-2","3.6.2-3","3.6.2-3ubuntu0.25.04.1"],"database_specific":{"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2021/UBUNTU-CVE-2021-20293.json"}},{"package":{"name":"resteasy3.0","ecosystem":"Ubuntu:25.04","purl":"pkg:deb/ubuntu/resteasy3.0@3.0.26-6ubuntu0.25.04.1?arch=source&distro=plucky"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["3.0.26-6","3.0.26-6ubuntu0.25.04.1"],"database_specific":{"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2021/UBUNTU-CVE-2021-20293.json"}}],"schema_version":"1.7.3","severity":[{"type":"CVSS_V3","score":"CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N"},{"type":"Ubuntu","score":"medium"}]}