CVE-2026-94265
Description
AI Translation Available
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`.
https://curl.se/docs/CVE-2026-94265.html
https://curl.se/docs/CVE-2026-94265.json
https://hackerone.com/reports/4040551