CVE-2021-43202: JetBrains TeamCity

Critical severity, CVSS 9.8. EPSS: 1.1% chance of exploitation in the next 30 days.

In JetBrains TeamCity before 2021.1.3, the X-Frame-Options header is missing in some cases.

Affected products

• JetBrains TeamCity: before 2021.1.3 (fixed in 2021.1.3)

Published 2021-11-30. Last modified 2026-06-17.