{"action":"Upgrade otrs2 to 6.0.32-5 or later.","affected":[{"fixed":"6.0.32-5","introduced":"0"}],"component":"otrs2","cve_ids":[],"ecosystem":"Debian","ecosystem_qualifier":"Debian:11","exploited":false,"fixed_versions":["6.0.32-5"],"id":"tcs_01M5NFDPMSZ5HG07D1BRJ9NJYF","modified_at":"2026-08-27T23:03:58.902120447Z","published_at":"2021-06-14T08:15:10.097Z","references":["https://osv.dev/vulnerability/DEBIAN-CVE-2021-21439","https://security-tracker.debian.org/tracker/CVE-2021-21439"],"severity":{"label":"medium","score":6.5},"sources":[{"source":"osv","source_id":"DEBIAN-CVE-2021-21439","url":"https://osv.dev/vulnerability/DEBIAN-CVE-2021-21439"}],"summary":"DoS attack can be performed when an email contains specially designed URL in the body. It can lead to the high CPU usage and cause low quality of service, or in extreme case bring the system to a halt"}