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.
CVSS Details
- CVSS 3.1 Base Score: 5.3
- CVSS 3.1 Vector: (CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N)
Covered by Rapid7
| Product | Vendor Advisory | Solution File | Added | Published |
|---|---|---|---|---|
| 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 curl-minimal-debuginfoUpgrade libcurl-minimalUpgrade curl-debuginfoUpgrade libcurl-minimal-debuginfoUpgrade curl-debugsourceNo solution existsUpgrade libcurlUpgrade libcurl-develUpgrade curl-minimalUpgrade curlUpgrade libcurl-debuginfo | Jul 17, 2026 | Mar 11, 2026 |
| Rocky_linux | — | Upgrade curlUpgrade libcurl-minimalUpgrade libcurl-debuginfoUpgrade libcurl-develUpgrade libcurl-minimal-debuginfoUpgrade curl-minimalUpgrade libcurlUpgrade curl-minimal-debuginfoUpgrade curl-debuginfoUpgrade curl-debugsource | Aug 20, 2026 | Aug 17, 2026 |
| Suse | — | Upgrade libcurl4Upgrade libcurl-develUpgrade curl-zsh-completionUpgrade curlUpgrade libcurl-mini4Upgrade curl-fish-completionUpgrade libcurl4-32bitUpgrade libcurl-devel-32bitUpgrade libcurl-devel-doc | Mar 13, 2026 | Mar 12, 2026 |
| Ubuntu | — | Upgrade curl (Ubuntu Pro)Upgrade libcurl3-nss (Ubuntu Pro)Upgrade libcurl3-gnutls (Ubuntu Pro)Upgrade libcurl3-gnutlsUpgrade libcurl3t64-gnutlsUpgrade libcurl4t64Upgrade libcurl4Upgrade libcurl3-nssUpgrade curlUpgrade libcurl4 (Ubuntu Pro) | 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 |
Prioritise with Active Threat Intelligence
With curated Threat Intelligence, you can see which vulnerabilities truly put you at risk, prioritize what matters most, and act before attackers do.
Explore Intelligence Hub