Servers and applications
CVE-2026-6276
Using libcurl, when a custom `Host:` header is first set for an HTTP request and a second request is subsequently done using the same *easy handle* but without the custom `Host:` header set, the second request would use stale information and pass on cookies meant for the first host in the second request. Leak them.
- Severity
- High 7.5
- Published
- 13 May 2026
- Last changed
- 15 Sept 2026
- Added to UpHeron
- 21 Oct 2026
- Fixed in
- 8.20.0
- Sources
- NVD
Affected software
| Software | Affected versions |
|---|---|
curlServers and applications · cpe:a:haxx:curl |
|