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JLSEC-2026-433 Medium 4.8

libcurl supports *pinning* of the server certificate public key for HTTPS transfers. Due to an...

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JLSEC Published
Modified
Severity
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:L/A:N
Affected Packages
CURL_jll >= 8.5.0+0, < 8.14.1+0
LibCURL_jll >= 8.5.0+0, < 8.14.1+0
Aliases / Upstream
CVE-2025-5025 GHSA-x8ch-h5vv-q6cm EUVD-2025-16332

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.

References