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 | — | Upgrade curl | Aug 8, 2025 | May 28, 2025 |
| Debian | — | Upgrade curl | Jul 23, 2026 | Jul 23, 2026 |
| Freebsd | — | Upgrade curl | Jun 3, 2025 | Jun 1, 2025 |
| Splunk | — | Upgrade Splunk Enterprise to version 9.2.9Upgrade Splunk Enterprise to version 10.0.1Upgrade Splunk Enterprise to version 9.2.8Upgrade Splunk Enterprise to version 9.4.4Upgrade Splunk Enterprise to version 9.3.7Upgrade Splunk Enterprise to version 9.4.5Upgrade Splunk Enterprise to version 9.3.6 | Jul 30, 2026 | May 28, 2025 |
| Suse | — | Upgrade libcurl-devel-docUpgrade libcurl4Upgrade libcurl-devel-32bitUpgrade libcurl4-32bitUpgrade libcurl-mini4Upgrade curl-zsh-completionUpgrade curlUpgrade libcurl-devel | Sep 15, 2025 | Sep 12, 2025 |
| Vmware Photon_os | — | Use 'tdnf update' to upgrade all packages to the latest version. | Feb 9, 2026 | May 28, 2025 |
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