What is CVE-2021-31901?

CVE-2021-31901 is a high-severity vulnerability in Jetbrains Hub. CVSS score: 7.5/10. Published 2021-05-11.

How severe is CVE-2021-31901?

High severity. CVSS v3 base score is 7.5 out of 10.

Vulnerability in Jetbrains Hub

CVE-2021-31901

In JetBrains Hub before 2021.1.13079, two-factor authentication wasn't enabled properly for the All Users group.

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

CVSS v3 metric

CVSS v3 base score 7.5 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N.

EPSS exploit prediction

EPSS: 0.009 (57.0th percentile), scored 2026-09-29.

Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 57th percentile — 57.0% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.009 · newest: 0.009 · change: 0.000

Affected products

Jetbrains Hub

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-2021-31901?: CVE-2021-31901 is a high-severity vulnerability in Jetbrains Hub. CVSS score: 7.5/10. Published 2021-05-11.
How severe is CVE-2021-31901?: High severity. CVSS v3 base score is 7.5 out of 10.