When an OAuth2 bearer token is used for an HTTP(S) transfer, and that transfer performs a redirect to a second URL, curl could leak that token to the second hostname under some circumstances.
If the hostname that the first request is redirected to has information in the used .netrc file, with either of the `machine` or `default` keywords, curl would pass on the bearer token set for the first host also to the second one.
| Product | Vendor Advisory | Solution File | Added | Published |
|---|---|---|---|---|
| Alma_linux | — | Upgrade curl-minimalUpgrade libcurl-minimalUpgrade libcurlUpgrade curlUpgrade libcurl-devel | Oct 11, 2026 | Aug 17, 2026 |
| Alpine Linux | — | Upgrade curl | May 20, 2026 | Mar 11, 2026 |
| Apple Osx Curl | — | Upgrade macOS to the latest version | Sep 10, 2026 | Jul 27, 2026 |
| Debian | — | Upgrade curl | Jul 12, 2026 | Jul 12, 2026 |
| Freebsd | — | Upgrade curl | Mar 12, 2026 | Mar 11, 2026 |
| Ibm Aix | — | Apply the fix or workaround for curl_advisory10 | Jun 28, 2026 | Jun 26, 2026 |
| Redhat_linux | — | Upgrade libcurl-minimalUpgrade libcurl-minimal-debuginfoUpgrade curl-debuginfoUpgrade curl-minimal-debuginfoNo solution existsUpgrade libcurl-develUpgrade libcurl-debuginfoUpgrade curl-debugsourceUpgrade libcurlUpgrade curlUpgrade curl-minimal | Jul 17, 2026 | Mar 11, 2026 |
| Rocky_linux | — | Upgrade curl-minimal-debuginfoUpgrade curl-debuginfoUpgrade libcurlUpgrade curl-debugsourceUpgrade libcurl-develUpgrade curlUpgrade libcurl-minimal-debuginfoUpgrade libcurl-minimalUpgrade libcurl-debuginfoUpgrade curl-minimal | Aug 20, 2026 | Aug 17, 2026 |
| Suse | — | Upgrade curl-fish-completionUpgrade curlUpgrade libcurl-mini4Upgrade libcurl-develUpgrade libcurl4Upgrade curl-zsh-completionUpgrade libcurl4-32bitUpgrade libcurl-devel-docUpgrade libcurl-devel-32bit | Mar 13, 2026 | Mar 12, 2026 |
| Ubuntu | — | Upgrade curl (Ubuntu Pro)Upgrade libcurl3t64-gnutlsUpgrade libcurl3-gnutls (Ubuntu Pro)Upgrade libcurl3-gnutlsUpgrade libcurl3-nss (Ubuntu Pro)Upgrade curlUpgrade libcurl4t64Upgrade libcurl4Upgrade libcurl4 (Ubuntu Pro)Upgrade libcurl3-nss | Mar 12, 2026 | Mar 11, 2026 |
| Vmware Photon_os | — | Use 'tdnf update' to upgrade all packages to the latest version. | May 27, 2026 | Mar 11, 2026 |
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