Servers and applications
CVE-2026-19931
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.
- Severity
- Critical 9.8
- Published
- 6 Sept 2026
- Last changed
- 15 Sept 2026
- Added to UpHeron
- 21 Oct 2026
- Fixed in
- 8.22.0
- Sources
- NVD
Affected software
| Software | Affected versions |
|---|---|
curlServers and applications · cpe:a:haxx:curl |
|