CVE-2022-38667: Crowcpp Crow

Critical severity, CVSS 9.8. EPSS: 2.9% chance of exploitation in the next 30 days.

HTTP applications (servers) based on Crow through 1.0+4 may allow a Use-After-Free and code execution when HTTP pipelining is used. The HTTP parser supports HTTP pipelining, but the asynchronous Connection layer is unaware of HTTP pipelining. Specifically, the Connection layer is unaware that it has begun processing a later request before it has finished processing an earlier request.

Affected products

• Crowcpp Crow: up to and including 1.0\+4

Published 2022-08-22. Last modified 2026-06-17.