{"id":"UBUNTU-CVE-2021-20718","details":"mod_auth_openidc 2.4.0 to 2.4.7 allows a remote attacker to cause a denial-of-service (DoS) condition via unspecified vectors.","modified":"2025-10-24T04:50:06Z","published":"2021-05-20T02:15:00Z","upstream":["CVE-2021-20718"],"references":[{"type":"REPORT","url":"https://ubuntu.com/security/CVE-2021-20718"},{"type":"REPORT","url":"https://github.com/zmartzone/mod_auth_openidc"},{"type":"REPORT","url":"https://jvn.jp/en/jp/JVN49704918/index.html"},{"type":"REPORT","url":"https://www.zmartzone.eu/"},{"type":"REPORT","url":"https://www.cve.org/CVERecord?id=CVE-2021-20718"}],"affected":[{"package":{"name":"libapache2-mod-auth-openidc","ecosystem":"Ubuntu:20.04:LTS","purl":"pkg:deb/ubuntu/libapache2-mod-auth-openidc@2.4.1-1?arch=source&distro=focal"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["2.3.10.2-1","2.4.0.4-1","2.4.1-1"],"ecosystem_specific":{"binaries":[{"binary_version":"2.4.1-1","binary_name":"libapache2-mod-auth-openidc"}]},"database_specific":{"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2021/UBUNTU-CVE-2021-20718.json"}}],"schema_version":"1.7.3","severity":[{"type":"CVSS_V3","score":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H"},{"type":"Ubuntu","score":"medium"}]}