It was discovered that Phusion Passenger incorrectly handled a file path in the application root folder. An attacker could possibly use this issue to read arbitrary files. (CVE-2017-16355)
It was discovered that Phusion Passenger had a race condition in the nginx module that could be used to perform a symlink attack. An attacker could possibly use this issue to escalate privileges. (CVE-2018-12029)
{
    "availability": "Available with Ubuntu Pro: https://ubuntu.com/pro",
    "binaries": [
        {
            "binary_name": "libapache2-mod-passenger",
            "binary_version": "5.0.27-2ubuntu0.1~esm1"
        },
        {
            "binary_name": "passenger",
            "binary_version": "5.0.27-2ubuntu0.1~esm1"
        },
        {
            "binary_name": "ruby-passenger",
            "binary_version": "5.0.27-2ubuntu0.1~esm1"
        }
    ]
}
          {
    "ecosystem": "Ubuntu:Pro:16.04:LTS",
    "cves": [
        {
            "id": "CVE-2017-16355",
            "severity": [
                {
                    "type": "CVSS_V3",
                    "score": "CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:N/A:N"
                },
                {
                    "type": "Ubuntu",
                    "score": "medium"
                }
            ]
        },
        {
            "id": "CVE-2018-12029",
            "severity": [
                {
                    "type": "CVSS_V3",
                    "score": "CVSS:3.0/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H"
                },
                {
                    "type": "Ubuntu",
                    "score": "medium"
                }
            ]
        }
    ]
}