{"id":"AZL-82730","summary":"CVE-2026-33555 affecting package haproxy for versions less than 2.9.11-5","details":"An 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.","modified":"2026-09-20T05:33:47Z","published":"2026-04-13T17:16:28Z","upstream":["CVE-2026-33555"],"references":[{"type":"WEB","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-33555"}],"affected":[{"package":{"name":"haproxy","ecosystem":"Azure Linux:3","purl":"pkg:rpm/azure-linux/haproxy"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"2.9.11-5"}]}],"database_specific":{"source":"https://github.com/microsoft/AzureLinuxVulnerabilityData/blob/main/osv/AZL-82730.json"}}],"schema_version":"1.9.0"}