Successfully using libcurl to do a transfer to a specific HTTP origin (`hostA`) with **Digest** authentication and then changing the origin to a different one (`hostB`) for a second transfer, reusing the same handle, makes libcurl wrongly pass on the `Authorization:` header field meant for `hostA`, to `hostB`.
CVSS Details
- CVSS 3.1 Base Score: 9.8
- CVSS 3.1 Vector: (CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H)
Covered by Rapid7
| Product | Vendor Advisory | Solution File | Added | Published |
|---|---|---|---|---|
| Alma_linux | — | Upgrade curlUpgrade libcurl-develUpgrade curl-minimalUpgrade libcurl-minimalUpgrade libcurl | Oct 12, 2026 | Oct 12, 2026 |
| Alpine Linux | — | Upgrade curl | Jul 6, 2026 | Jul 3, 2026 |
| Amazon_linux_2023 | — | Upgrade libcurl-debuginfoUpgrade curl-debuginfoUpgrade curl-debugsourceUpgrade curl-minimal-debuginfoUpgrade libcurlUpgrade libcurl-minimal-debuginfoUpgrade libcurl-develUpgrade libcurl-minimalUpgrade curl-minimalUpgrade curl | Sep 30, 2026 | Jul 3, 2026 |
| Ibm Aix | — | Apply the fix or workaround for curl_advisory11 | Jul 28, 2026 | Jul 28, 2026 |
| Redhat_linux | — | Upgrade libcurl-minimal-debuginfoUpgrade curl-minimal-debuginfoUpgrade curl-debugsourceUpgrade curl-debuginfoUpgrade libcurl-develUpgrade curlUpgrade libcurl-minimalUpgrade curl-minimalNo solution existsUpgrade libcurlUpgrade libcurl-debuginfo | Jul 17, 2026 | Jul 3, 2026 |
| Rocky_linux | — | Upgrade libcurl-debuginfoUpgrade curlUpgrade curl-debuginfoUpgrade libcurl-develUpgrade libcurlUpgrade curl-minimal-debuginfoUpgrade curl-debugsourceUpgrade libcurl-minimal-debuginfoUpgrade libcurl-minimalUpgrade curl-minimal | Sep 28, 2026 | Sep 22, 2026 |
| Ubuntu | — | Upgrade libcurl3t64-gnutlsUpgrade libcurl4-nss-dev (Ubuntu Pro)Upgrade libcurl4t64Upgrade libcurl4 (Ubuntu Pro)Upgrade libcurl4-gnutls-dev (Ubuntu Pro)Upgrade libcurl4-openssl-devUpgrade libcurl3-gnutlsUpgrade curl (Ubuntu Pro)Upgrade curlUpgrade libcurl4-nss-devUpgrade libcurl4Upgrade libcurl3-nss (Ubuntu Pro)Upgrade libcurl3 (Ubuntu Pro)Upgrade libcurl4-openssl-dev (Ubuntu Pro)Upgrade libcurl4-gnutls-devUpgrade libcurl3-nssUpgrade libcurl3-gnutls (Ubuntu Pro) | Aug 20, 2026 | Aug 19, 2026 |
| Vmware Photon_os | — | Use 'tdnf update' to upgrade all packages to the latest version. | Aug 13, 2026 | Jul 3, 2026 |
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