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When reusing a libcurl handle for sequential transfers driven by environment-variable proxy configuration, libcurl fails to clear the proxy authentication state between requests. Specifically, if the initial transfer authenticates against `proxyA` using Digest auth, a subsequent transfer routed through `proxyB` erroneously leaks the `Proxy-Authorization:` header intended solely for `proxyA`.
| Product | Vendor Advisory | Solution File | Added | Published |
|---|---|---|---|---|
| Alma_linux | — | Upgrade libcurl-minimalUpgrade curl-minimalUpgrade libcurl-develUpgrade curlUpgrade libcurl | Oct 11, 2026 | Sep 21, 2026 |
| Alpine Linux | — | Upgrade curl | Jul 6, 2026 | Jul 3, 2026 |
| Amazon_linux_2023 | — | Upgrade curlUpgrade libcurl-minimal-debuginfoUpgrade curl-debuginfoUpgrade libcurl-debuginfoUpgrade curl-minimal-debuginfoUpgrade curl-debugsourceUpgrade libcurl-develUpgrade libcurl-minimalUpgrade curl-minimalUpgrade libcurl | Sep 30, 2026 | Jul 3, 2026 |
| Debian | — | Upgrade curl | Oct 20, 2026 | Jul 3, 2026 |
| Ibm Aix | — | Apply the fix or workaround for curl_advisory11 | Jul 28, 2026 | Jul 28, 2026 |
| Redhat_linux | — | Upgrade libcurl-minimalUpgrade libcurl-debuginfoUpgrade libcurl-develUpgrade curl-minimalUpgrade curlNo solution existsUpgrade curl-debuginfoUpgrade curl-minimal-debuginfoUpgrade libcurlUpgrade curl-debugsourceUpgrade libcurl-minimal-debuginfo | Aug 4, 2026 | Jul 3, 2026 |
| Rocky_linux | — | Upgrade curl-minimalUpgrade curl-debugsourceUpgrade libcurl-minimal-debuginfoUpgrade curl-minimal-debuginfoUpgrade curl-debuginfoUpgrade libcurl-debuginfoUpgrade libcurl-develUpgrade curlUpgrade libcurlUpgrade libcurl-minimal | Aug 20, 2026 | Aug 17, 2026 |
| Splunk | — | Upgrade Splunk Enterprise to version 10.0.10Upgrade Splunk Enterprise to version 9.4.15Upgrade Splunk Enterprise to version 10.4.3Upgrade Splunk Enterprise to version 10.2.7 | Oct 20, 2026 | Jul 3, 2026 |
| Ubuntu | — | Upgrade libcurl3-gnutls (Ubuntu Pro)Upgrade libcurl3 (Ubuntu Pro)Upgrade curl (Ubuntu Pro)Upgrade libcurl3-nss (Ubuntu Pro)Upgrade libcurl3t64-gnutlsUpgrade libcurl3-gnutlsUpgrade libcurl4-gnutls-devUpgrade libcurl4-openssl-dev (Ubuntu Pro)Upgrade libcurl4Upgrade libcurl3-nssUpgrade libcurl4-gnutls-dev (Ubuntu Pro)Upgrade libcurl4t64Upgrade libcurl4-nss-devUpgrade libcurl4-nss-dev (Ubuntu Pro)Upgrade libcurl4-openssl-devUpgrade curlUpgrade libcurl4 (Ubuntu Pro) | Jul 1, 2026 | Jun 30, 2026 |
| Vmware Photon_os | — | Use 'tdnf update' to upgrade all packages to the latest version. | Aug 10, 2026 | Jul 3, 2026 |
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