In haml versions prior to version 5.0.0.beta.2, when using user input to perform tasks on the server, characters like < > " '
must be escaped properly. In this case, the '
character was missed. An attacker can manipulate the input to introduce additional attributes, potentially executing code.
{ "nvd_published_at": "2019-10-15T18:15:00Z", "cwe_ids": [ "CWE-79" ], "severity": "MODERATE", "github_reviewed": true, "github_reviewed_at": "2019-10-16T15:18:02Z" }