CVE-2021-43953

Name: CVE-2021-43953
Creator: NVD / NIST
Published: 2022-02-15T03:15:07.497+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

MEDIUMCVSS 4.3/10EPSS 0.47%

Last modified Jun 17, 2026

CVE-2021-43953 is a medium-severity vulnerability rated 4.3/10 on the CVSS scale. Affected versions of Atlassian Jira Server and Data Center allow unauthenticated remote attackers to toggle the Thread Contention and CPU monitoring settings via a Cross-Site Request Forgery (CSRF) vulnerability in the /secure/admin/ViewInstrumentation.jspa endpoint. The affected versions are before version 8.13.16, and from version 8.14.0 before 8.20.5.. EPSS estimates a 0.47% chance of exploitation in the next 30 days.

Description

Affected versions of Atlassian Jira Server and Data Center allow unauthenticated remote attackers to toggle the Thread Contention and CPU monitoring settings via a Cross-Site Request Forgery (CSRF) vulnerability in the /secure/admin/ViewInstrumentation.jspa endpoint. The affected versions are before version 8.13.16, and from version 8.14.0 before 8.20.5.

Metrics

CVSS 3.1

4.3/10

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

EPSS Probability

0.47%

37.0th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

CWE-352

Affected Software

Vendor	Product	Versions
Atlassian	Data Center	< 8.13.16
Atlassian	Data Center	>= 8.14.0, < 8.20.5
Atlassian	Jira	< 8.13.16
Atlassian	Jira	>= 8.14.0, < 8.20.5

References

https://jira.atlassian.com/browse/JRASERVER-73170Issue Tracking, Vendor Advisory
https://jira.atlassian.com/browse/JRASERVER-73170Issue Tracking, Vendor Advisory

Timeline

Published: Feb 15, 2022
Last Modified: Jun 17, 2026
Status: Modified

Frequently Asked Questions

What is CVE-2021-43953?

How severe is CVE-2021-43953?

CVE-2021-43953 has a CVSS score of 4.3/10 (MEDIUM severity). The EPSS model estimates a 0.47% probability of exploitation in the next 30 days.

How do I fix CVE-2021-43953?

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-2021-43953?

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

Scan your code now

Source: NVD / NIST