CVE-2021-43947

Severity: high (CVSS 7.2 v3.1)
Exploited in the wild: not listed in CISA KEV
EPSS: 4.1% probability of exploitation in the next 30 days
Public exploit or detection template: none known
Published: 2022-01-06 · updated 2026-06-17

Description

Affected versions of Atlassian Jira Server and Data Center allow remote attackers with administrator privileges to execute arbitrary code via a Remote Code Execution (RCE) vulnerability in the Email Templates feature. This issue bypasses the fix of https://jira.atlassian.com/browse/JSDSERVER-8665. The affected versions are before version 8.13.15, and from version 8.14.0 before 8.20.3.

Affected products

Atlassian Data Center: before 8.13.15 — fixed in 8.13.15
Atlassian Jira: before 8.13.15 — fixed in 8.13.15
Atlassian Jira: from 8.14.0 before 8.20.3 — fixed in 8.20.3
Atlassian Jira: from 8.14.0 before 8.20.3 — fixed in 8.20.3

How to fix

Upgrade to a fixed version: Atlassian Data Center 8.13.15; Atlassian Jira 8.13.15; Atlassian Jira 8.20.3; Atlassian Jira 8.20.3. Check the vendor advisory for mitigations.

References

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