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ALPINE-CVE-2025-5399

ALPINE-CVE-2025-5399 PUBLISHED CVSS 7.5 HIGH

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.

Risk Scores

CVSS 3.1
7.5
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

Affected Products

VendorProductVersions
Alpine:v3.22curl7.19.7-r0, 7.19.6-r0, 7.19.5-r0
Alpine:v3.20curl8.1.2-r0, 8.13.0, 8.9.1-r2
Alpine:v3.24curl8.13.0
Alpine:v3.21curl7.77.0-r1, 7.60.0-r1, 7.21.5-r0
Alpine:v3.19curl0, 8.13.0, 8.9.1-r1
Alpine:v3.23curl7.21.0-r0, 7.20.1-r0, 7.19.7-r1

Timeline

  • Jun 7, 2025 CVE Published
  • Apr 30, 2026 Distribution Patch
  • Jul 8, 2026 CVE Updated
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