What is CVE-2021-31906?

CVE-2021-31906 is a low-severity vulnerability in Jetbrains Teamcity. CVSS score: 2.7/10. Published 2021-05-11.

How severe is CVE-2021-31906?

Low severity. CVSS v3 base score is 2.7 out of 10.

Vulnerability in Jetbrains Teamcity

CVE-2021-31906

In JetBrains TeamCity before 2020.2.2, audit logs were not sufficient when an administrator uploaded a file.

Published 2021-05-11 · last modified 2026-06-17.

CVSS v3 metric

CVSS v3 base score 2.7 (Low). Vector: CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:N/I:L/A:N.

EPSS exploit prediction

EPSS: 0.006 (45.2th percentile), scored 2026-09-30.

Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 45th percentile — 45.2% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.006 · newest: 0.006 · change: 0.000

Affected products

Jetbrains Teamcity

References

blog.jetbrains.com (Vendor Advisory)
blog.jetbrains.com/blog/2021/05/07/jetbrains-security-bulletin-q1-2021/ (Vendor Advisory)

Frequently asked questions

What is CVE-2021-31906?: CVE-2021-31906 is a low-severity vulnerability in Jetbrains Teamcity. CVSS score: 2.7/10. Published 2021-05-11.
How severe is CVE-2021-31906?: Low severity. CVSS v3 base score is 2.7 out of 10.