VULNERABILITY INTELLIGENCE

CVE-2026-11586

CVSS score7.5 HIGH
EPSS probability0.86%
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

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.

Weakness classification

  • 2499f714-1537-4658-8207-48ae4bb9eae9: CWE-770
  • nvd@nist.gov: CWE-770

Primary references