An exponential ReDoS (Regular Expression Denial of Service) can be triggered in the pymatgen PyPI package, when an attacker is able to supply arbitrary input to the GaussianInput.from_string method.
{
    "nvd_published_at": "2022-11-09T20:15:00Z",
    "github_reviewed_at": "2022-11-10T18:55:00Z",
    "cwe_ids": [
        "CWE-1333"
    ],
    "severity": "MODERATE",
    "github_reviewed": true
}