CVE-2025-5399 Affecting curl package, versions <8.14.1-r0


Severity

Recommended
low

Based on default assessment until relevant scores are available.

Threat Intelligence

EPSS
0.05% (16th percentile)

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  • Snyk IDSNYK-ALPINE322-CURL-10301450
  • published4 Jun 2025
  • disclosed7 Jun 2025

Introduced: 4 Jun 2025

NewCVE-2025-5399  (opens in a new tab)

How to fix?

Upgrade Alpine:3.22 curl to version 8.14.1-r0 or higher.

NVD Description

Note: Versions mentioned in the description apply only to the upstream curl package and not the curl package as distributed by Alpine. See How to fix? for Alpine:3.22 relevant fixed versions and status.

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.

CVSS Base Scores

version 3.1