What’s Vulnerable › Vulnerabilities

CVE-2019-12156

• Severity: medium (CVSS 5.3 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 0.9% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2019-10-02 · updated 2026-06-17
• Weakness: CWE-209

Description

Server metadata could be exposed because one of the error messages reflected the whole response back to the client in JetBrains TeamCity versions before 2018.2.5 and UpSource versions before 2018.2 build 1293.

Affected products

• JetBrains Upsource: before 2018.2.1290 — fixed in 2018.2.1290

How to fix

Upgrade to a fixed version: JetBrains Upsource 2018.2.1290. Check the vendor advisory for mitigations.

References

• https://blog.jetbrains.com/blog/2019/09/26/jetbrains-security-bulletin-q2-2019/
• https://blog.jetbrains.com/blog/2019/09/26/jetbrains-security-bulletin-q2-2019/

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