{"id":"CVE-2021-42076","details":"An issue was discovered in Barrier before 2.3.4. An attacker can cause memory exhaustion in the barriers component (aka the server-side implementation of Barrier) and barrierc by sending long TCP messages.","modified":"2026-04-10T04:40:42.219547Z","published":"2021-11-08T04:15:08.637Z","references":[{"type":"ADVISORY","url":"https://github.com/debauchee/barrier/releases/tag/v2.3.4"},{"type":"EVIDENCE","url":"http://www.openwall.com/lists/oss-security/2021/11/02/4"}],"affected":[{"ranges":[{"type":"GIT","repo":"https://github.com/debauchee/barrier","events":[{"introduced":"0"},{"fixed":"c43597c27a4e57b0b599d41360bc4d29bd7bfe48"}],"database_specific":{"versions":[{"introduced":"0"},{"fixed":"2.3.4"}]}}],"versions":["1.6.0","1.6.1","1.6.2","1.6.3-final","1.7.0","v1.7.1-stable","v1.7.2-stable","v1.7.3-stable","v1.8.0-beta","v1.8.1-stable","v2.0.0","v2.0.0-RC1","v2.0.0-RC2","v2.1.0","v2.1.1","v2.1.2","v2.3.0","v2.3.1","v2.3.2","v2.3.3"],"database_specific":{"source":"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2021-42076.json"}}],"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"}]}