Jenkins 2.478 and earlier, LTS 2.462.2 and earlier does not redact multi-line secret values in error messages generated for form submissions involving the secretTextarea form field.
{
"versions": [
{
"introduced": "0"
},
{
"fixed": "2.462.3"
},
{
"introduced": "0"
},
{
"fixed": "2.479"
}
]
}