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Medium severity6.5NVD Advisory· Published Jul 3, 2026· Updated Sep 15, 2026

CVE-2026-8458

CVE-2026-8458

Description

libcurl might in some circumstances reuse the wrong connection when asked to do Negotiate-authenticated ones, even when they are set to use different "services".

libcurl features a pool of recent connections so that subsequent requests can reuse an existing connection to avoid overhead.

When reusing a connection a range of criteria must be met. Due to a logical error in the code, a request that was issued by an application could wrongfully reuse an existing connection to the same server that was authenticated using different services.

AI Insight

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Affected products

19

Patches

Vulnerability mechanics

References

3

News mentions

1