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CVE-2026-86415

auto client cert connection reuse mixup PUBLISHED

Description (CNA)

libcurl's connection cache match function never considers the automatic client certificate option, so a cached, already authenticated Schannel connection can be handed to a transfer that got redirected to a different origin, even though the code explicitly switched off the auto client cert option for that transfer to prevent exactly this.

Affected (CNA)

Vendor / productVersions
curl / curlaffected 8.22.0 through 8.22.0; affected 8.21.0 through 8.21.0

CWE

No CWE identifiers supplied.

References