{"id":"CVE-2026-83537","aliases":["EUVD-2026-74723","GHSA-89f9-r4mq-rxxm"],"status":"published","title":"WP Express Checkout \u003c 2.5.0 - Unauthenticated Payment Bypass via wpec_process_empty_payment","description":"The WP Express Checkout WordPress plugin before 2.5.0 does not verify server-side that a payment was actually completed before marking an order as paid, allowing unauthenticated users to forge a completed order without paying.","severity":{"version":"3.1","score":5.3,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N","level":"medium","assessor":"cna","from":"cve"},"epss":{"day":"2026-11-11","score":0.00163,"percentile":0.05532,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":false},"cwes":["CWE-345"],"published":"2026-09-09T06:25:06Z","modified":"2026-09-09T18:31:58Z","products":[{"vendor":"unknown","product":"wp express checkout"}],"references":[{"url":"https://wpscan.com/vulnerability/02b39e4f-181d-4573-9175-bf5a6d71e531/","tags":["exploit","vdb-entry","technical-description"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2026-83537"},{"url":"https://wpscan.com/vulnerability/02b39e4f-181d-4573-9175-bf5a6d71e531"},{"url":"https://github.com/advisories/GHSA-89f9-r4mq-rxxm"}],"sources":{"cve":[{"id":"CVE-2026-83537","title":"WP Express Checkout \u003c 2.5.0 - Unauthenticated Payment Bypass via wpec_process_empty_payment","description":"The WP Express Checkout WordPress plugin before 2.5.0 does not verify server-side that a payment was actually completed before marking an order as paid, allowing unauthenticated users to forge a completed order without paying.","status":"published","published":"2026-09-09T06:25:06.539Z","modified":"2026-09-09T15:23:34.131Z","cvss":[{"version":"3.1","score":5.3,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N","level":"medium","assessor":"cna"}],"cwes":["CWE-345"],"updated_at":"2026-11-02T13:44:51.734189Z"}],"euvd":[{"id":"EUVD-2026-74723","description":"The WP Express Checkout WordPress plugin before 2.5.0 does not verify server-side that a payment was actually completed before marking an order as paid, allowing unauthenticated users to forge a completed order without paying.","status":"published","published":"2026-09-09T06:25:06Z","modified":"2026-09-09T15:23:34Z","cvss":[{"version":"3.1","score":5.3,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N","level":"medium"}],"updated_at":"2026-11-02T17:28:26.882462Z"}],"ghsa":[{"id":"GHSA-89f9-r4mq-rxxm","title":"The WP Express Checkout WordPress plugin before 2.5.0 does not verify server-side that a payment...","description":"The WP Express Checkout WordPress plugin before 2.5.0 does not verify server-side that a payment was actually completed before marking an order as paid, allowing unauthenticated users to forge a completed order without paying.","status":"published","published":"2026-09-09T09:32:57Z","modified":"2026-09-09T18:31:58Z","cvss":[{"version":"3.1","score":5.3,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N","level":"medium"}],"cwes":["CWE-345"],"updated_at":"2026-11-02T15:11:39.437162Z"}],"nvd":[{"id":"CVE-2026-83537","description":"The WP Express Checkout WordPress plugin before 2.5.0 does not verify server-side that a payment was actually completed before marking an order as paid, allowing unauthenticated users to forge a completed order without paying.","status":"published","published":"2026-09-09T07:16:58.54Z","modified":"2026-09-09T16:17:12.13Z","cvss":[{"version":"3.1","score":5.3,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N","level":"medium","assessor":"secondary"}],"cwes":["CWE-345"],"updated_at":"2026-11-02T14:12:45.93749Z"}]}}