VULNERABILITY INTELLIGENCE

CVE-2026-11352

CVSS score7.5 HIGH
EPSS probability1.01%
CISA KEVNot currently listed
Published2026-07-03
Last modified2026-09-15
CVSS vectorCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

Description

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. Because the helper function discards zero-length UDP datagrams before counting them toward the per-call packet budget, a connected QUIC peer can continuously stream empty datagrams to indefinitely stall the client.

Weakness classification

  • 2499f714-1537-4658-8207-48ae4bb9eae9: CWE-835
  • nvd@nist.gov: CWE-835

Primary references