What’s Vulnerable › Vulnerabilities

CVE-2021-43185

• Severity: critical (CVSS 9.8 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 2.0% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2021-11-09 · updated 2026-06-17
• Weakness: CWE-74

Description

JetBrains YouTrack before 2021.3.23639 is vulnerable to Host header injection.

Affected products

• JetBrains YouTrack: before 2021.3.23639 — fixed in 2021.3.23639

How to fix

Upgrade to a fixed version: JetBrains YouTrack 2021.3.23639. 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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