Files indicating when a plugin JPI file was last extracted into a subdirectory of plugins/ in the Jenkins home directory were accessible via HTTP by users with Overall/Read permission before Jenkins 2.133. This allowed unauthorized users to determine the likely install date of a given plugin.
Files indicating when a plugin JPI file was last extracted into a subdirectory of plugins/ in the Jenkins home directory were accessible via HTTP by users with Overall/Read permission before Jenkins 2.133. This allowed unauthorized users to determine the likely install date of a given plugin.
https://jenkins.io/security/advisory/2018-07-18/