CVE-2021-39124

Name: CVE-2021-39124
Creator: NVD / NIST
Published: 2021-09-14T05:15:10.08+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

MEDIUMCVSS 4.3/10EPSS 0.51%

Last modified Jun 17, 2026

CVE-2021-39124 is a medium-severity vulnerability rated 4.3/10 on the CVSS scale. The Cross-Site Request Forgery (CSRF) failure retry feature of Atlassian Jira Server and Data Center before version 8.16.0 allows remote attackers who are able to trick a user into retrying a request to bypass CSRF protection and replay a crafted request.. EPSS estimates a 0.51% chance of exploitation in the next 30 days.

Description

The Cross-Site Request Forgery (CSRF) failure retry feature of Atlassian Jira Server and Data Center before version 8.16.0 allows remote attackers who are able to trick a user into retrying a request to bypass CSRF protection and replay a crafted request.

Metrics

CVSS 3.1

4.3/10

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

EPSS Probability

0.51%

39.6th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

CWE-352

Affected Software

Vendor	Product	Versions
Atlassian	Data Center	< 8.16.0
Atlassian	Jira	< 8.16.0

References

https://jira.atlassian.com/browse/JRASERVER-72761Vendor Advisory
https://jira.atlassian.com/browse/JRASERVER-72761Vendor Advisory

Timeline

Published: Sep 14, 2021
Last Modified: Jun 17, 2026
Status: Modified

Frequently Asked Questions

What is CVE-2021-39124?

How severe is CVE-2021-39124?

CVE-2021-39124 has a CVSS score of 4.3/10 (MEDIUM severity). The EPSS model estimates a 0.51% probability of exploitation in the next 30 days.

How do I fix CVE-2021-39124?

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-2021-39124?

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

Scan your code now

Source: NVD / NIST