VULNERABILITY INTELLIGENCE

CVE-2026-11856

CVSS score9.8 CRITICAL
EPSS probability0.69%
CISA KEVNot currently listed
Published2026-07-03
Last modified2026-09-15
CVSS vectorCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Description

Successfully using libcurl to do a transfer to a specific HTTP origin (`hostA`) with **Digest** authentication and then changing the origin to a different one (`hostB`) for a second transfer, reusing the same handle, makes libcurl wrongly pass on the `Authorization:` header field meant for `hostA`, to `hostB`.

Weakness classification

  • 2499f714-1537-4658-8207-48ae4bb9eae9: CWE-294
  • nvd@nist.gov: CWE-294

Primary references