Jetbrains · Jetbrains Ktor · CVE-2021-43203
**Name of the Vulnerable Software and Affected Versions**
JetBrains Ktor versions prior to 1.6.4
**Description**
The issue is related to improper nonce verification during the OAuth2 authentication process.
**Recommendations**
For versions prior to 1.6.4, update to version 1.6.4 or later to resolve the issue.