CVE-2014-2064
The loadUserByUsername function in hudson/security/HudsonPrivateSecurityRealm.java in Jenkins before 1.551 and LTS before 1.532.2 allows remote attackers to determine whether a user exists via vectors related to failed login attempts.
Versions it affects
Software versions checked with the free lookup that CVE-2014-2064 applies to, and the release that fixes it where the sources name one.
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