What’s Vulnerable › Vulnerabilities

CVE-2021-43202

• Severity: critical (CVSS 9.8 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 1.1% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2021-11-30 · updated 2026-06-17

Description

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

How to fix

Upgrade to a fixed version: JetBrains TeamCity 2021.1.3. Check the vendor advisory for mitigations.

References

• https://blog.jetbrains.com/blog/2021/11/08/jetbrains-security-bulletin-q3-2021/
• https://blog.jetbrains.com/blog/2021/11/08/jetbrains-security-bulletin-q3-2021/

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