Unrated severityNVD Advisory· Published Sep 6, 2026
CVE-2026-19931
CVE-2026-19931
Description
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.
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Affected products
1Patches
Vulnerability mechanics
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