UBUNTU-CVE-2026-11586

Advisory lineage Upstream: 1 Downstream: 1
Upstream
CVE-2026-11586
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

By default, curl automatically responds to WebSocket PING frames. Because curl lacks an upper bound on memory allocation for unacknowledged frames, a malicious server can exhaust all available memory by flooding curl with rapid, sequential PING messages.

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)