{"id":"CVE-2026-103331","aliases":["EUVD-2026-111696","GHSA-c6r8-q9rq-vw5v"],"status":"published","title":"UniPAY Payment Gateway For WooCommerce \u003c 2.4 - Unauthenticated Order Payment Forgery via Empty IPN Secret","description":"The UniPAY Payment Gateway For WooCommerce WordPress plugin before 2.4 does not properly verify the authenticity of payment notifications, as their signature is checked against a merchant secret that is empty by default, allowing unauthenticated attackers to forge a valid notification and mark arbitrary orders as paid.","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":"adp","from":"cve"},"epss":{"day":"2026-11-12","score":0.00231,"percentile":0.14058,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":false},"cwes":["CWE-287"],"published":"2026-10-28T06:00:19Z","modified":"2026-11-05T11:12:49Z","products":[{"vendor":"unknown","product":"unipay payment gateway for woocommerce"}],"references":[{"url":"https://wpscan.com/vulnerability/a7d61b5f-9e92-459c-8f6d-1c92ea94ef00/","tags":["exploit","vdb-entry","technical-description"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2026-103331"},{"url":"https://wpscan.com/vulnerability/a7d61b5f-9e92-459c-8f6d-1c92ea94ef00"},{"url":"https://github.com/advisories/GHSA-c6r8-q9rq-vw5v"}],"sources":{"cve":[{"id":"CVE-2026-103331","title":"UniPAY Payment Gateway For WooCommerce \u003c 2.4 - Unauthenticated Order Payment Forgery via Empty IPN Secret","description":"The UniPAY Payment Gateway For WooCommerce WordPress plugin before 2.4 does not properly verify the authenticity of payment notifications, as their signature is checked against a merchant secret that is empty by default, allowing unauthenticated attackers to forge a valid notification and mark arbitrary orders as paid.","status":"published","published":"2026-10-28T06:00:19.793Z","modified":"2026-11-05T11:12:49.777Z","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":"adp"}],"cwes":["CWE-287"],"updated_at":"2026-11-05T13:18:22.408512Z"}],"euvd":[{"id":"EUVD-2026-111696","description":"The UniPAY Payment Gateway For WooCommerce WordPress plugin before 2.4 does not properly verify the authenticity of payment notifications, as their signature is checked against a merchant secret that is empty by default, allowing unauthenticated attackers to forge a valid notification and mark arbitrary orders as paid.","status":"published","published":"2026-10-28T06:00:19Z","modified":"2026-11-05T11:12:49Z","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":"2026-11-05T13:14:14.11293Z"}],"ghsa":[{"id":"GHSA-c6r8-q9rq-vw5v","title":"The UniPAY Payment Gateway For WooCommerce WordPress plugin through 2.3 does not properly verify...","description":"The UniPAY Payment Gateway For WooCommerce WordPress plugin through 2.3 does not properly verify the authenticity of payment notifications, as their signature is checked against a merchant secret that is empty by default, allowing unauthenticated attackers to forge a valid notification and mark arbitrary orders as paid.","status":"published","published":"2026-10-28T06:30:26Z","modified":"2026-10-28T18:33:02Z","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-287"],"updated_at":"2026-11-02T15:14:36.375319Z"}],"nvd":[{"id":"CVE-2026-103331","description":"The UniPAY Payment Gateway For WooCommerce WordPress plugin before 2.4 does not properly verify the authenticity of payment notifications, as their signature is checked against a merchant secret that is empty by default, allowing unauthenticated attackers to forge a valid notification and mark arbitrary orders as paid.","status":"published","published":"2026-10-28T06:16:31.57Z","modified":"2026-11-09T20:10:00.2Z","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-287"],"updated_at":"2026-11-09T22:15:53.091765Z"}]}}