CVE-2026-8458

A flaw was found in libcurl. A logical error in the connection pooling mechanism may cause libcurl to reuse an authenticated connection for an unintended service. This could allow an application to wrongfully reuse an existing connection to the same server that was authenticated for a different service, potentially leading to unauthorized access or information disclosure.

This is an Important flaw in libcurl where a logical error in connection pooling can lead to unauthorized connection reuse. When an application uses Negotiate authentication with different service names on the same hostname and port, libcurl might incorrectly reuse an existing authenticated connection for an unintended service. This could result in information disclosure or unauthorized access to resources, bypassing intended service isolation.

The CVSS score(s) listed for this vulnerability do not reflect the associated product's status, and are included for informational purposes to better understand the severity of this vulnerability.

Mitigation for this issue is either not available or the currently available options do not meet the Red Hat Product Security criteria comprising ease of use and deployment, applicability to widespread installation base or stability.