CURL-CVE-2026-19931

vendorUSosv

Negotiate ambient user conn reuse

view advisory published 2026-09-02Licence: per source

A flaw in libcurl makes it wrongly reuse an HTTP connection setup for a given hostname using Negotiate authentication, when the initial request is done using empty credentials. This can make user B's request get sent over user A's previously authenticated connection.

01

describes (1)

Related CVEs.

IDseverity exploitable
CVE-2026-19931US——
A flaw in libcurl makes it wrongly reuse an HTTP connection setup for a given hostname using Negotiate authentication, when the initial request is done using empty credentials. Thi…
scry

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