CVE-2019-19703: JetBrains Ktor

Medium severity, CVSS 6.1. EPSS: 0.6% chance of exploitation in the next 30 days.

In Ktor through 1.2.6, the client resends data from the HTTP Authorization header to a redirect location.

Affected products

• JetBrains Ktor: up to and including 1.2.6

Published 2019-12-10. Last modified 2026-06-17.