CVE-2025-4947 Information

Description

libcurl accidentally skips the certificate verification for QUIC connections when connecting to a host specified as an IP address in the URL. Therefore it does not detect impostors or man-in-the-middle attacks.

Reference

cve@curl.se http://www.openwall.com/lists/oss-security/2025/05/28/4 https://curl.se/docs/CVE-2025-4947.html https://curl.se/docs/CVE-2025-4947.json https://hackerone.com/reports/3150884 libcurl accidentally skips the certificate verification for QUIC connections when connecting to a host specified as an IP address in the URL. Therefore it does not detect impostors or man-in-the-middle attacks.