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Atlassian has published security advisory CVE-2019-11581 today, 10 July 2019. This advisory is in regards to multiple versions of Jira Server and Data Center. Jira Cloud is not affected. The goal of this article is to help raise awareness for this critical vulnerability and to provide you a means to ask further questions about this in Community if needed.
Atlassian's official recommendation is that all affected Jira instances upgrade to a fixed version as soon as possible.
If you do nothing else, turn off the Contact Administrator's form immediately in Jira. While Jira ships by default with this feature OFF, you can check to make sure it is disabled if you are a Jira administrator by going to
More details on this option in Configuring Jira application options - Atlassian Documentation.
If this option is enabled, and Jira is setup to use an SMTP mail server, it is possible that one avenue of this vulnerability could be exploited by an unauthenticated user in Jira. There are additional mitigation steps below, but these apply to authenticated users that require Jira administrator permission levels to exploit.
7.6.x before 7.6.14 (the fixed version for 7.6.x)
7.13.x before 7.13.5 (the fixed version for 7.13.x)
8.0.x before 8.0.3 (the fixed version for 8.0.x)
8.1.x before 8.1.2 (the fixed version for 8.1.x)
8.2.x before 8.2.3 (the fixed version for 8.2.x)
If you are unable to upgrade Jira immediately, then as a temporary workaround, you can:
/secure/admin/SendBulkMail!default.jspaendpoint from being accessed. This can be achieved by denying access in the reverse-proxy, load balancer, or Tomcat directly (see the KB: How to block access to a specific URL at Tomcat).
After upgrading Jira to a fixed version, you can re-enable the Administrator Contact Form, and unblock the