In fenom 2.12.1 and before, there is a way in fenom/src/Fenom/Template.php function getTemplateCode()to bypass sandbox to execute arbitrary PHP code when disablenativefuncs is true.
{
"source": "CPE_FIELD",
"cpe": "cpe:2.3:a:fenom_project:fenom:*:*:*:*:*:*:*:*",
"extracted_events": [
{
"introduced": "0"
},
{
"last_affected": "2.12.1"
}
]
}