CVE-2021-43187

Name: CVE-2021-43187
Creator: NVD / NIST
Published: 2021-11-09T15:15:09.127+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

MEDIUMCVSS 5.3/10EPSS 0.77%

Last modified Jun 17, 2026

CVE-2021-43187 is a medium-severity vulnerability rated 5.3/10 on the CVSS scale. In JetBrains YouTrack Mobile before 2021.2, the client-side cache on iOS could contain sensitive information.. EPSS estimates a 0.77% chance of exploitation in the next 30 days.

Description

In JetBrains YouTrack Mobile before 2021.2, the client-side cache on iOS could contain sensitive information.

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

0.77%

50.9th percentile

Probability of exploitation in the next 30 days. Learn more

Affected Software

Vendor	Product	Versions
Jetbrains	Youtrack Mobile	< 2021.2

References

https://blog.jetbrains.com/blog/2021/11/08/jetbrains-security-bulletin-q3-2021/Vendor Advisory
https://blog.jetbrains.com/blog/2021/11/08/jetbrains-security-bulletin-q3-2021/Vendor Advisory

Timeline

Published: Nov 9, 2021
Last Modified: Jun 17, 2026
Status: Modified

Frequently Asked Questions

What is CVE-2021-43187?

In JetBrains YouTrack Mobile before 2021.2, the client-side cache on iOS could contain sensitive information.

How severe is CVE-2021-43187?

CVE-2021-43187 has a CVSS score of 5.3/10 (MEDIUM severity). The EPSS model estimates a 0.77% probability of exploitation in the next 30 days.

How do I fix CVE-2021-43187?

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-2021-43187?

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

Scan your code now

Source: NVD / NIST