CURL-CVE-2026-7168

vendorUSosv

cross-proxy Digest auth state leak

view advisory published 2026-04-29Licence: per source

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`.

01

describes (1)

Related CVEs.

IDseverity exploitable
CVE-2026-7168USmedium—
scry

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