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.
CVSS Details
- CVSS 3.1 Base Score: 4.8
- CVSS 3.1 Vector: (CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:L/A:N)
Covered by Rapid7
| Product | Vendor Advisory | Solution File | Added | Published |
|---|---|---|---|---|
| Alpine Linux | alpine-linux-upgrade-curl | Aug 8, 2025 | May 28, 2025 | |
| Freebsd | freebsd-upgrade-package-curl | Jun 3, 2025 | Jun 1, 2025 | |
| Suse | — | suse-upgrade-curlsuse-upgrade-curl-zsh-completionsuse-upgrade-libcurl-develsuse-upgrade-libcurl-devel-32bitsuse-upgrade-libcurl-devel-docsuse-upgrade-libcurl-mini4suse-upgrade-libcurl4suse-upgrade-libcurl4-32bit | Sep 15, 2025 | Sep 12, 2025 |
| Vmware Photon_os | vmware-photon_os_update_tdnf | Feb 9, 2026 | May 28, 2025 |
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