CVE-2021-39128
7.2 · HIGHOverview
CVE-2021-39128 is a high-severity vulnerability affecting atlassian jira_data_center. It was published on September 16, 2021 and has a CVSS 3.1 base score of 7.2 (HIGH).
This vulnerability has a CVSS 3.1 base score of 7.2, rated HIGH. It can be exploited remotely over the network. Some level of privileges is required for exploitation.
Technical Description
Affected versions of Atlassian Jira Server or Data Center using the Jira Service Management addon allow remote attackers with JIRA Administrators access to execute arbitrary Java code via a server-side template injection vulnerability in the Email Template feature. The affected versions of Jira Server or Data Center are before version 8.13.12, and from version 8.14.0 before 8.19.1.
Remediation
Check the references section for vendor advisories and patches from atlassian. Update jira_data_center to the latest patched version. If immediate patching is not possible, review the CVSS vector to understand the attack surface and apply compensating controls such as network segmentation or access restrictions.
Affected Products
| Vendor | Product | Versions | Status |
|---|---|---|---|
| atlassian | jira_data_center | >= 0, < 8.13.12 | Affected |
| atlassian | jira_server | >= 0, < 8.13.12 | Affected |
Frequently Asked Questions
What is CVE-2021-39128?
CVE-2021-39128 is a high-severity vulnerability affecting atlassian jira_data_center. It was published on September 16, 2021 and has a CVSS 3.1 base score of 7.2 (HIGH).
How severe is CVE-2021-39128?
This vulnerability has a CVSS 3.1 base score of 7.2, rated HIGH. It can be exploited remotely over the network. Some level of privileges is required for exploitation.
How do I fix or remediate CVE-2021-39128?
Check the references section for vendor advisories and patches from atlassian. Update jira_data_center to the latest patched version. If immediate patching is not possible, review the CVSS vector to understand the attack surface and apply compensating controls such as network segmentation or access restrictions.
How can CyberStrike help with CVE-2021-39128?
CyberStrike's AI-powered security agents can automatically detect CVE-2021-39128 across your infrastructure using autonomous pentesting, DAST scanning, and HackBrowser. The platform continuously monitors for known vulnerabilities and provides actionable remediation guidance prioritized by real-world exploitability.
How CyberStrike Helps
AI agents map your attack surface to find vulnerabilities like this one.
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