Versions of base64url before 3.0.0 are vulnerable to to out-of-bounds reads as it allocates uninitialized Buffers when number is passed in input on Node.js 4.x and below.
Update to version 3.0.0 or later.
{
"cwe_ids": [
"CWE-125"
],
"github_reviewed": true,
"github_reviewed_at": "2020-08-31T18:31:38Z",
"nvd_published_at": null,
"severity": "MODERATE"
}