{"id":"CVE-2020-27782","details":"A flaw was found in the Undertow AJP connector. Malicious requests and abrupt connection closes could be triggered by an attacker using query strings with non-RFC compliant characters resulting in a denial of service. The highest threat from this vulnerability is to system availability. This affects Undertow 2.1.5.SP1, 2.0.33.SP2, and 2.2.3.SP1.","aliases":["GHSA-rhcw-wjcm-9h6g"],"modified":"2026-03-14T10:07:02.052741Z","published":"2021-02-23T19:15:13.150Z","references":[{"type":"REPORT","url":"https://bugzilla.redhat.com/show_bug.cgi?id=1901304"}],"affected":[{"database_specific":{"source":"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2020-27782.json","unresolved_ranges":[{"events":[{"introduced":"0"},{"last_affected":"6.0.0"}]},{"events":[{"introduced":"0"},{"last_affected":"7.0.0"}]},{"events":[{"introduced":"0"},{"last_affected":"2.0.33-sp2"}]},{"events":[{"introduced":"0"},{"last_affected":"2.1.5-sp1"}]},{"events":[{"introduced":"0"},{"last_affected":"2.2.3-sp1"}]}]}}],"schema_version":"1.7.5","severity":[{"type":"CVSS_V3","score":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H"}]}