CVE-2025-5025

libcurl supports *pinning* of the server certificate public key for HTTPS transfers. Due to an omission, this check is not performed when connecting with QUIC for HTTP/3, when the TLS backend is wolfSSL. Documentation says the option works with wolfSSL, failing to specify that it does not for QUIC and HTTP/3. Since pinning makes the transfer succeed if the pin is fine, users could unwittingly connect to an impostor server without noticing.

• CWE-295

• https://curl.se/docs/CVE-2025-5025.htmlVendor Advisory
• https://curl.se/docs/CVE-2025-5025.jsonVendor Advisory
• https://hackerone.com/reports/3153497Exploit, Issue Tracking, Third Party Advisory
• http://www.openwall.com/lists/oss-security/2025/05/28/5Mailing List, Third Party Advisory

Published

May 28, 2025

Last Modified

Jun 17, 2026

Status

Analyzed

• How Strix found a critical auth bypass in etcdStrix autonomously discovered a critical authentication bypass in etcd, later designated CVE-2026-33413.
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