Math/PrimeField.php in phpseclib 3.x before 3.0.19 has an infinite loop with composite primefields.
{ "versions": [ { "introduced": "3.0.0" }, { "fixed": "3.0.19" } ] }
"https://storage.googleapis.com/osv-test-cve-osv-conversion/osv-output/CVE-2023-27560.json"