{"id":"CVE-2026-110590","title":"Klarna for WooCommerce <= 4.13.3 - Missing Authorization to Unauthenticated Sensitive Information Disclosure via 'order-pay' Endpoint","summary":"The Klarna for WooCommerce plugin for WordPress is vulnerable to authorization bypass in all versions up to, and including, 4.13.3 This is due to the plugin not properly verifying that a user is authorized to perform an action. This make…","severity":"high","cvss":7.5,"cvssVector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N","cvssSource":"cna","cwe":["CWE-862"],"vendor":"klarnaplugin","product":"Klarna for WooCommerce","affected":["klarna_for_woocommerce <= 4.13.3"],"ssvc":{"exploitation":"none","automatable":"yes","technicalImpact":"partial","timestamp":"2026-10-16T14:57:42.888860Z"},"published":"2026-10-16","updated":"2026-10-16","sourceUpdated":"2026-10-16T15:09:39.428Z","source":"CVEORG","sourceUrl":"https://www.cve.org/CVERecord?id=CVE-2026-110590","references":[{"url":"https://www.wordfence.com/threat-intel/vulnerabilities/id/c3abb96e-6ee2-4992-a122-9f661da9a4d6?source=cve"},{"url":"https://plugins.trac.wordpress.org/browser/klarna-payments-for-woocommerce/tags/4.13.3/classes/class-kp-assets.php#L185"},{"url":"https://plugins.trac.wordpress.org/browser/klarna-payments-for-woocommerce/tags/4.13.3/classes/class-kp-assets.php#L198"},{"url":"https://plugins.trac.wordpress.org/browser/klarna-payments-for-woocommerce/tags/4.13.3/classes/class-kp-assets.php#L204"},{"url":"https://plugins.trac.wordpress.org/browser/klarna-payments-for-woocommerce/tags/4.13.3/classes/class-kp-assets.php#L159"},{"url":"https://github.com/krokedil/klarna-payments-for-woocommerce/compare/4.13.3...f5362605a9901b7f9264cfa3b22fd782a7a3097b"},{"url":"https://plugins.trac.wordpress.org/changeset/3740915/klarna-payments-for-woocommerce/trunk/classes/class-kp-assets.php"}],"tags":["cve.org"],"epss":0.00325,"epssPercentile":0.23966,"ingestedAt":"2026-10-16T04:58:47.492Z","slug":"CVE-2026-110590","body":"## Overview\n\nThe Klarna for WooCommerce plugin for WordPress is vulnerable to authorization bypass in all versions up to, and including, 4.13.3 This is due to the plugin not properly verifying that a user is authorized to perform an action. This makes it possible for unauthenticated attackers to access any order's secret order_key and full billing and shipping PII — including first name, last name, email address, phone number, street address, postcode, city, region, and country — emitted inline as the klarna_payments_params JavaScript variable, enabling full store-wide order enumeration. Because WooCommerce order IDs are sequential integers and no order_key or authenticated session is required, every order in the store can be trivially enumerated with sequential GET requests to the order-pay endpoint.\n\n## Affected\n\n- `klarna_for_woocommerce <= 4.13.3`\n\n## Remediation\n\nRefer to the linked advisories for vendor-supplied fixes and affected version ranges.","depth":"twilight","depthScore":41,"depthScoreParts":{"impact":41.3,"likelihood":0.1,"exploitation":0,"ransomware":0},"changes":[]}