CVE-2024-0853: Haxx Curl

Medium severity, CVSS 5.3. EPSS: 1.1% chance of exploitation in the next 30 days.

curl inadvertently kept the SSL session ID for connections in its cache even when the verify status (*OCSP stapling*) test failed. A subsequent transfer to the same hostname could then succeed if the session ID cache was still fresh, which then skipped the verify status check.

Affected products

• Haxx Curl: version 8.5.0 only

Published 2024-02-03. Last modified 2026-06-17.