In Fluent Bit 2.1.8 through 2.2.1, a NULL pointer dereference can be caused via an invalid HTTP payload with the content type of x-www-form-urlencoded. It crashes and does not restart. This could result in logs not being delivered properly.
{
"cpes": [
"cpe:2.3:a:treasuredata:fluent_bit:*:*:*:*:*:*:*:*"
],
"severity": "High"
}