{"id":"CVE-2026-11352","url":"https://www.cyber-defence.io/tools/cve/CVE-2026-11352","generatedAt":"2026-10-28T11:56:14.366Z","title":"An issue in curl’s QUIC UDP receive function allows a malicious HTTP/3 server to trigger a remote denial of service against a curl or libcurl client.","description":"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":"2026-07-03T07:16:24.000Z","lastModified":"2026-09-15T07:16:25.000Z","status":"Modified","sourceIdentifier":"2499f714-1537-4658-8207-48ae4bb9eae9","cvss":{"version":"3.1","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"},"cwe":["CWE-835"],"affected":["haxx/curl"],"epss":{"score":0.0101,"percentile":0.62972,"date":"2026-10-27","history":[]},"kev":{"listed":false},"exploits":{"count":0,"verified":false,"firstPublished":null,"source":"Exploit-DB (https://gitlab.com/exploit-database/exploitdb)","entries":[]},"verdict":{"level":"high","text":"High impact if exploited, but EPSS currently rates exploitation as unlikely (1.01%). Schedule it in the normal patch cycle and watch for a rise in EPSS or a public exploit."},"changes":[],"references":[{"url":"https://curl.se/docs/CVE-2026-11352.html","tags":["Patch","Vendor Advisory"],"source":"2499f714-1537-4658-8207-48ae4bb9eae9"},{"url":"https://curl.se/docs/CVE-2026-11352.json","tags":["Vendor Advisory"],"source":"2499f714-1537-4658-8207-48ae4bb9eae9"},{"url":"https://hackerone.com/reports/3783438","tags":["Exploit","Issue Tracking","Third Party Advisory"],"source":"2499f714-1537-4658-8207-48ae4bb9eae9"},{"url":"https://hackerone.com/reports/3783438","tags":["Exploit","Issue Tracking","Third Party Advisory"],"source":"134c704f-9b21-4f2e-91b3-4a467353bcc0"}],"sources":{"nvd":"https://nvd.nist.gov/vuln/detail/CVE-2026-11352","epss":"https://www.first.org/epss/","kev":"https://www.cisa.gov/known-exploited-vulnerabilities-catalog","exploitdb":"https://www.exploit-db.com/"},"licence":"CC BY 4.0 — link back to the CVE Explorer if you publish the results; upstream data remains subject to its own terms."}