VULNERABILITY INTELLIGENCE

CVE-2025-5399

CVSS score7.5 HIGH
EPSS probability1.38%
CISA KEVNot currently listed
Published2025-06-07
Last modified2026-06-17
CVSS vectorCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

Description

Due to a mistake in libcurl's WebSocket code, a malicious server can send a particularly crafted packet which makes libcurl get trapped in an endless busy-loop. There is no other way for the application to escape or exit this loop other than killing the thread/process. This might be used to DoS libcurl-using application.

Weakness classification

  • nvd@nist.gov: CWE-835

Primary references