news.mlab.sh
Vulnerabilities
Vulnerability

CVE-2026-11856

Reference data from vuln.mlab.sh, coverage from our own index.

CVSS
9.8 Critical
Vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Risk score
78.4
Published
2026-07-03
Status
Published

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`.

Weaknesses

CWE-294 Authentication Bypass by Capture-replay

Coverage 2

Advisories and references