lib/rack/utils.rb in Rack before 1.5.4 and 1.6.x before 1.6.2, as used with Ruby on Rails 3.x and 4.x and other products, allows remote attackers to cause a denial of service (SystemStackError) via a request with a large parameter depth.
{
"nvd_published_at": null,
"github_reviewed_at": "2020-06-16T21:54:48Z",
"cwe_ids": [],
"github_reviewed": true,
"severity": "MODERATE"
}