What’s Vulnerable › Vulnerabilities

CVE-2021-43944

• Severity: high (CVSS 7.2 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 2.3% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2022-03-08 · updated 2026-06-17
• Weakness: CWE-94

Description

This issue exists to document that a security improvement in the way that Jira Server and Data Center use templates has been implemented. Affected versions of Atlassian Jira Server and Data Center allowed remote attackers with system administrator permissions to execute arbitrary code via Template Injection leading to Remote Code Execution (RCE) in the Email Templates feature. The affected versions are before version 8.13.15, and from version 8.14.0 before 8.20.3.

Affected products

• Atlassian Jira: before 8.13.15; from 8.14.0 before 8.20.3 — fixed in 8.13.15, 8.20.3
• Atlassian Jira: before 8.13.15; from 8.14.0 before 8.20.3 — fixed in 8.13.15, 8.20.3

How to fix

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

References

• https://jira.atlassian.com/browse/JRASERVER-73072
• https://jira.atlassian.com/browse/JRASERVER-73072

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