{"id":"CVE-2019-14243","aliases":["GHSA-85c5-ccm8-vr96","GO-2023-1923"],"url":"https://o3.security/vulnerability/CVE-2019-14243","summary":"mastercactapus proxyprotocol vulnerable to denial of service","details":"headerv2.go in mastercactapus proxyprotocol before 0.0.2, as used in the mastercactapus caddy-proxyprotocol plugin through 0.0.2 for Caddy, allows remote attackers to cause a denial of service (webserver panic and daemon crash) via a crafted HAProxy PROXY v2 request with truncated source/destination address data.","published":"2019-07-23T22:15:11.643Z","modified":"2026-07-08T17:56:10.388384Z","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":1,"affectedPackages":[{"ecosystem":"Go","name":"github.com/mastercactapus/proxyprotocol","fixedVersion":"0.0.2"}],"fix":{"url":"https://github.com/mastercactapus/proxyprotocol/commit/5c4a101121fc3e868026189c7a73f7f19eef90ac","label":"mastercactapus/proxyprotocol@5c4a101"},"references":[{"type":"ADVISORY","url":"https://caddy.community/t/dos-in-http-proxyprotocol-plugin/6014"},{"type":"ADVISORY","url":"https://github.com/mastercactapus/proxyprotocol/compare/ef496d7...5c4a101"},{"type":"ADVISORY","url":"https://github.com/mastercactapus/proxyprotocol/releases/tag/v0.0.2"},{"type":"REPORT","url":"https://github.com/mastercactapus/caddy-proxyprotocol/issues/8"},{"type":"FIX","url":"https://github.com/mastercactapus/proxyprotocol/commit/5c4a101121fc3e868026189c7a73f7f19eef90ac"},{"type":"EVIDENCE","url":"https://github.com/mastercactapus/proxyprotocol/issues/1"}],"provenance":{"sources":["OSV.dev","FIRST.org (EPSS)"],"lastVerified":"2026-07-08T17:56:10.388384Z"}}