Jenkins 2.587 and earlier, LTS 2.580.1 and earlier improperly identifies file paths attempting path traversal in the file browser for workspaces and $JENKINS_HOME/userContent/, allowing attackers with Overall/Read permission to obtain the names, sizes, and last modification times of files in the $JENKINS_HOME, and attackers with Item/Workspace permission to obtain the names of jobs that have a workspace on the same agent.
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