@Marv Maven - technically this latest security advisory is not affecting your Jira v5.2, but your version of Jira is also unsupported by Atlassian Support End of Life Policy, you can see that policy here - https://confluence.atlassian.com/support/atlassian-support-end-of-life-policy-201851003.html
Please note there was a security advisory for your version over two years ago: https://confluence.atlassian.com/jira/jira-security-advisory-2017-03-09-879243455.html
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