{"id":"CVE-2026-11352","aliases":["CURL-CVE-2026-11352"],"url":"https://o3.security/vulnerability/CVE-2026-11352","summary":"QUIC zero-length UDP datagrams busy-loop","details":"An issue in curl’s QUIC UDP receive function allows a malicious HTTP/3 server\nto trigger a remote denial of service against a curl or libcurl client.\nBecause the helper function discards zero-length UDP datagrams before counting\nthem toward the per-call packet budget, a connected QUIC peer can continuously\nstream empty datagrams to indefinitely stall the client.","published":"2026-07-03T06:12:10.777Z","modified":"2026-08-12T03:51:41.533881661Z","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":0,"affectedPackages":[],"fix":null,"references":[{"type":"WEB","url":"https://curl.se/docs/CVE-2026-11352.html"},{"type":"WEB","url":"https://curl.se/docs/CVE-2026-11352.json"},{"type":"WEB","url":"https://hackerone.com/reports/3783438"},{"type":"ADVISORY","url":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/11xxx/CVE-2026-11352.json"},{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-11352"}],"provenance":{"sources":["OSV.dev","FIRST.org (EPSS)"],"lastVerified":"2026-08-12T03:51:41.533881661Z"}}