Path traversal in wcurl and cURL - CVE-2025-11563
Published: November 24, 2025
Vulnerability identifier: #VU118723
CSH Severity:
CVSSv4.0: CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:N/SC:N/SI:N/SA:N/E:U
CVE-ID: CVE-2025-11563
CWE-ID: CWE-22
Exploitation vector: Remote access
Exploit availability:
No public exploit available
Vulnerable software:
wcurl
cURL
wcurl
cURL
Software vendor:
curl.haxx.se
curl.haxx.se
Description
The vulnerability allows a remote attacker to perform directory traversal attacks.
The vulnerability exists due to input validation error when processing percent-encoded slashes (/ or \\) in wcurl. A remote attacker can trick the application into saving the output file outside of the current directory without the user explicitly asking for it.
Remediation
Install updates from vendor's website.