phpseclib before 2.0.31 and 3.x before 3.0.7 mishandles RSA PKCS#1 v1.5 signature verification.
{
    "nvd_published_at": "2021-04-06T15:15:00Z",
    "github_reviewed_at": "2021-04-07T17:29:49Z",
    "cwe_ids": [
        "CWE-295",
        "CWE-347"
    ],
    "severity": "HIGH",
    "github_reviewed": true
}