In Drupal core, when sending email some variables were not being sanitized for shell arguments in DefaultMailSystem::mail(), which could lead to remote code execution.
{
    "nvd_published_at": null,
    "severity": "CRITICAL",
    "github_reviewed_at": "2024-05-15T20:27:23Z",
    "github_reviewed": true,
    "cwe_ids": [
        "CWE-94"
    ]
}