{"id":"CVE-2019-20455","aliases":["GHSA-pm77-c4q7-3fwj"],"url":"https://o3.security/vulnerability/CVE-2019-20455","summary":"Improper Certificate Validation in Heartland & Global Payments PHP SDK","details":"Gateways/Gateway.php in Heartland & Global Payments PHP SDK before 2.0.0 does not enforce SSL certificate validations.","published":"2020-02-14T16:15:09.680Z","modified":"2026-07-08T16:07:27.872768Z","cvss":{"score":5.9,"severity":"MEDIUM","vector":"CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:N/A:N"},"epss":{"score":0.00976,"percentile":0.58968,"asOf":"2026-08-23"},"cisaKev":null,"exploitsKnown":2,"affectedPackages":[{"ecosystem":"Packagist","name":"globalpayments/php-sdk","fixedVersion":"2.0.0"}],"fix":{"url":"https://github.com/globalpayments/php-sdk/pull/8","label":"globalpayments/php-sdk#8"},"references":[{"type":"ADVISORY","url":"https://github.com/globalpayments/php-sdk/releases/tag/2.0.0"},{"type":"FIX","url":"https://github.com/globalpayments/php-sdk/compare/1.3.3...2.0.0"},{"type":"FIX","url":"https://winterdragon.ca/global-payments-vulnerability/"},{"type":"EVIDENCE","url":"https://github.com/globalpayments/php-sdk/pull/8"}],"provenance":{"sources":["OSV.dev","FIRST.org (EPSS)"],"lastVerified":"2026-07-08T16:07:27.872768Z"}}