CVE-2018-5231
The ForgotLoginDetails resource in Atlassian Jira before version 7.6.6, from version 7.7.0 before version 7.7.4, from version 7.8.0 before version 7.8.4 and from version 7.9.0 before version 7.9.2 allows remote attackers to perform a denial of service attack via sending requests to it.
Source: CVE-2018-5231