CVE-2021-31900

Name: CVE-2021-31900
Creator: NVD / NIST
Published: 2021-05-11T12:15:07.813+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

MEDIUMCVSS 5.3/10EPSS 0.71%

Last modified Jun 17, 2026

CVE-2021-31900 is a medium-severity vulnerability rated 5.3/10 on the CVSS scale. In JetBrains Code With Me bundled to the compatible IDE versions before 2021.1, a client could open a browser on a host.. EPSS estimates a 0.71% chance of exploitation in the next 30 days.

Description

In JetBrains Code With Me bundled to the compatible IDE versions before 2021.1, a client could open a browser on a host.

Metrics

CVSS 3.1

5.3/10

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

EPSS Probability

0.71%

49.0th percentile

Probability of exploitation in the next 30 days. Learn more

Affected Software

Vendor	Product	Versions
Jetbrains	Code With Me	< 2021.1

References

https://blog.jetbrains.comVendor Advisory
https://blog.jetbrains.com/blog/2021/05/07/jetbrains-security-bulletin-q1-2021/Vendor Advisory
https://blog.jetbrains.comVendor Advisory
https://blog.jetbrains.com/blog/2021/05/07/jetbrains-security-bulletin-q1-2021/Vendor Advisory

Timeline

Published: May 11, 2021
Last Modified: Jun 17, 2026
Status: Modified

Frequently Asked Questions

What is CVE-2021-31900?

In JetBrains Code With Me bundled to the compatible IDE versions before 2021.1, a client could open a browser on a host.

How severe is CVE-2021-31900?

CVE-2021-31900 has a CVSS score of 5.3/10 (MEDIUM severity). The EPSS model estimates a 0.71% probability of exploitation in the next 30 days.

How do I fix CVE-2021-31900?

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-2021-31900?

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

Scan your code now

Source: NVD / NIST