CVE-2025-11563: Curl Wcurl

Medium severity, CVSS 4.6. EPSS: 0.4% chance of exploitation in the next 30 days.

URLs containing percent-encoded slashes (`/` or `\`) can trick wcurl into saving the output file outside of the current directory without the user explicitly asking for it. This flaw only affects the wcurl command line tool.

Affected products

• Curl Wcurl: from 2024-12-08, before 2025-11-09 (fixed in 2025-11-09)

Published 2026-02-25. Last modified 2026-06-17.