{"id":"OESA-2026-2083","summary":"haproxy security update","details":"HAProxy is a free, very fast and reliable solution offering high availability, load balancing, and proxying for TCP and HTTP-based applications. It is particularly suited for very high traffic web sites and powers quite a number of the world's most visited ones.\r\n\r\nSecurity Fix(es):\n\nAn issue was discovered in HAProxy before 3.3.6. The HTTP/3 parser does not check that the received body length matches a previously announced content-length when the stream is closed via a frame with an empty payload. This can cause desynchronization issues with the backend server and could be used for request smuggling. The earliest affected version is 2.6.(CVE-2026-33555)","modified":"2026-04-25T06:03:41.333553Z","published":"2026-04-25T05:50:01Z","upstream":["CVE-2026-33555"],"database_specific":{"severity":"Medium"},"references":[{"type":"ADVISORY","url":"https://www.openeuler.org/zh/security/security-bulletins/detail/?id=openEuler-SA-2026-2083"},{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-33555"}],"affected":[{"package":{"name":"haproxy","ecosystem":"openEuler:24.03-LTS-SP3","purl":"pkg:rpm/openEuler/haproxy&distro=openEuler-24.03-LTS-SP3"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"3.0.11-2.oe2403sp3"}]}],"ecosystem_specific":{"x86_64":["haproxy-3.0.11-2.oe2403sp3.x86_64.rpm","haproxy-debuginfo-3.0.11-2.oe2403sp3.x86_64.rpm","haproxy-debugsource-3.0.11-2.oe2403sp3.x86_64.rpm"],"src":["haproxy-3.0.11-2.oe2403sp3.src.rpm"],"noarch":["haproxy-help-3.0.11-2.oe2403sp3.noarch.rpm"],"aarch64":["haproxy-3.0.11-2.oe2403sp3.aarch64.rpm","haproxy-debuginfo-3.0.11-2.oe2403sp3.aarch64.rpm","haproxy-debugsource-3.0.11-2.oe2403sp3.aarch64.rpm"]},"database_specific":{"source":"https://repo.openeuler.org/security/data/osv/OESA-2026-2083.json"}}],"schema_version":"1.7.5"}