In Mistune through 2.0.2, support of inline markup is implemented by using regular expressions that can involve a high amount of backtracking on certain edge cases. This behavior is commonly named catastrophic backtracking.
{
"nvd_published_at": "2022-07-25T23:15:00Z",
"cwe_ids": [
"CWE-1333"
],
"github_reviewed_at": "2022-07-29T22:24:56Z",
"github_reviewed": true,
"severity": "HIGH"
}