{"id":"CVE-2023-49316","aliases":["GHSA-2f25-pfq3-c7h8"],"url":"https://o3.security/vulnerability/CVE-2023-49316","summary":"Phpseclib needs guardrails on large binaryfield integers","details":"In Math/BinaryField.php in phpseclib 3 before 3.0.34, excessively large degrees can lead to a denial of service.","published":"2023-11-27T00:00:00Z","modified":"2026-08-08T03:47:47.726631693Z","cvss":{"score":7.5,"severity":"HIGH","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H"},"epss":null,"cisaKev":null,"exploitsKnown":0,"affectedPackages":[{"ecosystem":"Packagist","name":"phpseclib/phpseclib","fixedVersion":"3.0.34"}],"fix":{"url":"https://github.com/phpseclib/phpseclib/commit/964d78101a70305df33f442f5490f0adb3b7e77f","label":"phpseclib/phpseclib@964d781"},"references":[{"type":"WEB","url":"https://github.com/phpseclib/phpseclib/releases/tag/3.0.34"},{"type":"ADVISORY","url":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2023/49xxx/CVE-2023-49316.json"},{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2023-49316"},{"type":"FIX","url":"https://github.com/phpseclib/phpseclib/commit/964d78101a70305df33f442f5490f0adb3b7e77f"}],"provenance":{"sources":["OSV.dev","FIRST.org (EPSS)"],"lastVerified":"2026-08-08T03:47:47.726631693Z"}}