There is a vulnerability in actionpack_page-caching gem < v1.2.1 that allows an attacker to write arbitrary files to a web server, potentially resulting in remote code execution if the attacker can write unescaped ERB to a view.
{
"github_reviewed": true,
"github_reviewed_at": "2020-05-13T16:28:30Z",
"nvd_published_at": "2020-05-12T13:15:00Z",
"severity": "CRITICAL",
"cwe_ids": [
"CWE-22"
]
}