CVE-2026-7168

Successfully using libcurl to do a transfer over a specific HTTP proxy (`proxyA`) with **Digest** authentication and then changing the proxy host to a second one (`proxyB`) for a second transfer, reusing the same handle, makes libcurl wrongly pass on the `Proxy-Authorization:` header field meant for `proxyA`, to `proxyB`.

Affected products

Linuxmint, Red Os, Ubuntu, Curl, Libcurl

Haxx Curl

< 8.20.0

CVSS 3.1

5.3 MEDIUM

EPSS

0.5% (38th percentile)

Weakness

CWE-294

NVD status

Analyzed

Published

2026-05-13

No exploit for CVE-2026-7168 has been indexed yet. Our index is built from live traffic and upstream syncs, so this page can only say what it knows — not that no exploit exists.