CVE-2023-44386: Vapor

Medium severity, CVSS 5.3. EPSS: 0.7% chance of exploitation in the next 30 days.

Vapor is an HTTP web framework for Swift. There is a denial of service vulnerability impacting all users of affected versions of Vapor. The HTTP1 error handler closed connections when HTTP parse errors occur instead of passing them on. The issue is fixed as of Vapor release 4.84.2.

Affected products

• Vapor Vapor: from 4.83.2, before 4.84.2 (fixed in 4.84.2)

Published 2023-10-05. Last modified 2026-06-17.