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CVE PROGRAM SOURCE RECORD9.1 Critical

CVE-2026-86413

Negotiate credentials sent to redirected origin

Description

When using an *ambient user* in a first transfer doing Negotiate authentication and asked to follow redirects, curl could pass on its credential details to an unrelated second origin when asked to redirect there.

Affected products

Version statuses are supplied by the assigning organization. Consult the original record for detailed ranges and platform conditions.

curl curl

Default version status: unaffected

  • 8.22.0 to ≤ 8.22.0affected
  • 8.21.0 to ≤ 8.21.0affected

References