CVE-2026-11352

Advisory lineage Upstream: 0 Downstream: 7
PUBLISHED
Published: 03 Jul 2026, 06:12
Last modified:06 Jul 2026, 18:27

Vulnerability Summary

Overall Risk (default)
medium
30/100
CVSS Score
7.5 HIGH
v3.1 (cve.org)
EPSS Score
0.28% LOW
0% probability 0.00%
KEV
Not listed
Ransomware
No reports
Public exploits
None found
Dark Web
Not detected

Timeline

03 Jul 2026, 06:12
Published
Vulnerability first disclosed
06 Jul 2026, 18:27
Last Modified
Vulnerability information updated

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.

CVSS Metrics

  • v3.1•HIGH•Score: 7.5CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

EPSS Trends

Current EPSS score: 0.28%• Percentile: 20%

Affected Systems

  • curl•curl

    8.20.0 | 8.19.0 | 8.18.0

References (3)