Authorization: Negotiate sent to foreign origin
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`.
CVE-2026-94265
Primary source · Revision 1
Imported from structured advisory data. Source references identify upstream records or fields; verify affected versions and your deployed configuration.
Security context
Source reference: cve:CVE-2026-94265
curl
Source reference: /containers/cna/affected/0/product
- Affected versions
- Not stated in this record
- Fixed versions
- Not stated in this record
- Prerequisites
- Not stated in this record
Structured affected-version data
Original package identities and version rules from this source.
[
{
"vendor": "curl",
"product": "curl",
"versions": [
{
"status": "affected",
"version": "8.22.0",
"versionType": "semver",
"lessThanOrEqual": "8.22.0"
},
{
"status": "affected",
"version": "8.21.0",
"versionType": "semver",
"lessThanOrEqual": "8.21.0"
}
],
"defaultStatus": "unaffected"
}
]- Related CVEs
- CVE-2026-94265
Source reference:
/cveMetadata/cveId
Publisher severity
No explicit severity was provided.
- Event
- #42638 · Revision 1
- Added to Heist Feed
- Publisher date