CVE-2019-12156

Name: CVE-2019-12156
Creator: NVD / NIST
Published: 2019-10-02T19:15:11.827+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

MEDIUMCVSS 5.3/10EPSS 0.90%

Last modified Jun 17, 2026

CVE-2019-12156 is a medium-severity vulnerability rated 5.3/10 on the CVSS scale. 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.. EPSS estimates a 0.90% chance of exploitation in the next 30 days.

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.

Metrics

CVSS 3.1

5.3/10

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N

EPSS Probability

0.90%

55.2th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

CWE-209

Affected Software

Vendor	Product	Versions
Jetbrains	Upsource	< 2018.2.1290

References

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

Timeline

Published: Oct 2, 2019
Last Modified: Jun 17, 2026
Status: Modified

Frequently Asked Questions

What is CVE-2019-12156?

How severe is CVE-2019-12156?

CVE-2019-12156 has a CVSS score of 5.3/10 (MEDIUM severity). The EPSS model estimates a 0.90% probability of exploitation in the next 30 days.

How do I fix CVE-2019-12156?

Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

Are you affected by CVE-2019-12156?

Run a free Strix scan to check your systems for this vulnerability.

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Source: NVD / NIST