A flaw in libcurl makes it wrongly reuse an HTTP connection setup for a given hostname using Negotiate authentication, when the initial request is done using empty credentials. This can make user B's request get sent over user A's previously authenticated connection.
| Product | Vendor Advisory | Solution File | Added | Published |
|---|---|---|---|---|
| Alpine Linux | — | Upgrade curl | Sep 7, 2026 | Sep 6, 2026 |
| Ibm Aix | — | Apply the fix or workaround for curl_advisory13 | Oct 15, 2026 | Oct 14, 2026 |
| Redhat_linux | — | No solution exists | Sep 21, 2026 | Sep 6, 2026 |
| Vmware Photon_os | — | Use 'tdnf update' to upgrade all packages to the latest version. | Sep 24, 2026 | Sep 6, 2026 |
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