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Fencer Vulns
medium 4.3

CVE-2021-39124 json

The Cross-Site Request Forgery (CSRF) failure retry feature of Atlassian Jira Server and Data Center before version 8.16.0 allows remote at…

published 2021-09-14 5 y ago modified 2026-06-17 4 mo ago also EUVD-2021-25560

cvss
4.3
version 3.1, NVD
cisa kev
Not listed
not in CISA's catalog
epss
0.8%
EPSS 0.8% chance of exploitation in 30 days, percentile 56%
public exploits
0
none known

Summary

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.

Patch / fix

  • Atlassian Jira Server 8.16.0
  • Atlassian Jira Data Center 8.16.0

CISA SSVC

Exploitation
none
Automatable
no
Technical impact
partial
Assessed
2 y ago

Exploit prediction

0.80% chance of exploitation in the next 30 days, higher than 56% of all scored CVEs (FIRST EPSS, 2026-11-08).

CVSS scores

assigned by version score vector
NVD 3.1 4.3 CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:L/A:N
NVD 2.0 4.3 AV:N/AC:M/Au:N/C:N/I:P/A:N

Affected products

  • Atlassian Jira Server
  • Atlassian Jira Data Center

Classification

Weakness
  • CWE-352 Cross-Site Request Forgery

References

Sources

Fencer Vulns keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.