A vulnerability was found in PHP where setting the environment variable PHPCLISERVER_WORKERS to a large value leads to a heap buffer overflow.
{
    "severity": "Medium",
    "cpes": [
        "cpe:2.3:a:php:php:-:*:*:*:*:*:*:*",
        "cpe:2.3:a:php:php:7.4.0:-:*:*:*:*:*:*",
        "cpe:2.3:a:php:php:8.0.0:-:*:*:*:*:*:*",
        "cpe:2.3:a:php:php:8.1.0:-:*:*:*:*:*:*",
        "cpe:2.3:a:php:php:*:*:*:*:*:*:*:*"
    ]
}