UBUNTU-CVE-2026-11352

Advisory lineage Upstream: 1 Downstream: 1
Upstream
CVE-2026-11352
Downstream
USN-8525-1
Published: 24 Jun 2026, 14:00
Last modified:11 Jul 2026, 00:15

Vulnerability Summary

Overall Risk (default)
medium
30/100
CVSS Score
7.5 HIGH
3.1 (osv_ubuntu)
EPSS Score
No data
KEV
Not listed
Ransomware
No reports
Public exploits
None found
Dark Web
Not detected

Timeline

24 Jun 2026, 14:00
Published
Vulnerability first disclosed
11 Jul 2026, 00:15
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

Affected Systems

  • ubuntu•curl

    all | < 8.18.0-1ubuntu2.3

References (4)