{"id":"CVE-2021-40110","aliases":["GHSA-r58x-wjg8-63m9"],"url":"https://o3.security/vulnerability/CVE-2021-40110","summary":"Denial of Service in Apache James","details":"In Apache James, using Jazzer fuzzer, we identified that an IMAP user can craft IMAP LIST commands to orchestrate a Denial Of Service using a vulnerable Regular expression. This affected Apache James prior to 3.6.1 We recommend upgrading to Apache James 3.6.1 or higher , which enforce the use of RE2J regular expression engine to execute regex in linear time without back-tracking.","published":"2022-01-04T09:15:07.327Z","modified":"2026-07-09T00:36:47.283805Z","cvss":{"score":7.5,"severity":"HIGH","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H"},"epss":null,"cisaKev":null,"exploitsKnown":0,"affectedPackages":[{"ecosystem":"Maven","name":"org.apache.james:james-server","fixedVersion":"3.6.1"}],"fix":null,"references":[{"type":"ADVISORY","url":"http://www.openwall.com/lists/oss-security/2022/01/04/2"},{"type":"ADVISORY","url":"https://www.openwall.com/lists/oss-security/2022/01/04/2"}],"provenance":{"sources":["OSV.dev","FIRST.org (EPSS)"],"lastVerified":"2026-07-09T00:36:47.283805Z"}}