In RDoc 3.11 through 6.x before 6.3.1, as distributed with Ruby through 3.0.1, it is possible to execute arbitrary code via | and tags in a filename.
{ "nvd_published_at": "2021-07-30T14:15:00Z", "cwe_ids": [ "CWE-74", "CWE-77", "CWE-78" ], "severity": "HIGH", "github_reviewed": true, "github_reviewed_at": "2021-08-02T18:08:41Z" }