CVE-2026-94265
Fixed in a distro release EPSS <1%
When processing an HTTP redirect to a URL containing userinfo (a `username:password` component), curl might erroneously retain and re-transmit the original host's HTTP Negotiate authentication state. Consequently, a malicious server can trigger a redirect containing arbitrary userinfo to force curl to send a freshly minted Kerberos ticket—generated using the ambient identity of the client process to an untrusted third-party host, effectively bypassing the domain-scoping restrictions normally enforced by the absence of `--location-trusted`.
Products: curl
Distro releases
| Release | Package | Fixed in |
|---|---|---|
| Alpine 3.23 | curl | 8.23.0-r0 |
| Alpine 3.24 | curl | 8.23.0-r0 |
| Debian 14 | curl | no fix |
| Red Hat hummingbird 1 | curl | 0:8.23.0-0.1.hum1 |
| Red Hat hummingbird 1 | libcurl | 0:8.23.0-0.1.hum1 |
| Red Hat hummingbird 1 | libcurl-devel | 0:8.23.0-0.1.hum1 |
| Red Hat hummingbird 1 | libcurl-minimal | 0:8.23.0-0.1.hum1 |
| openSUSE Tumbleweed | curl | 8.23.0-1.1 |