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CVE-2026-110590— Klarna for WooCommerce <= 4.13.3 - Missing Authorization to Unauthenticated Sensitive Information Disclosure via 'order-pay' Endpoint

Quick assessment

Affected
klarnaplugin Klarna for WooCommerce
Exploitation
No confirmed in-the-wild exploitation; assess based on exposure
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

WordPress 的"Klarna for WooCommerce"插件在所有 4.13.3 及之前的版本中存在授权绕过漏洞。该漏洞源于插件未能正确验证用户是否有权执行特定操作。这使得未认证的攻击者能够获取任意订单的秘密订单密钥（order_key）以及完整的账单和收货个人身份信息（PII），包括：名字、姓氏、电子邮件地址、电话号码、街道地址、邮政编码、城市、地区和国家。这些信息以 JavaScript 变量的形式内联输出，从而导致整个商店范围内的订单可被完全枚举。由于 WooCommerce 的订单 ID 是连

CVSS 7.5 · High EPSS 0.33% · P24

Affected Version Matrix 1

VendorProduct Version RangeStatus
klarnaplugin Klarna for WooCommerce ≤ 4.13.3 affected
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I. Basic Information for CVE-2026-110590

Vulnerability Information
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Vulnerability Title
Klarna for WooCommerce <= 4.13.3 - Missing Authorization to Unauthenticated Sensitive Information Disclosure via 'order-pay' Endpoint
Source: CVE Program / CVE List V5
Vulnerability Description
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 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.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N
Source: CVE Program / CVE List V5
Vulnerability Type
授权机制缺失
Source: CVE Program / CVE List V5

Affected Products

Vendor Product Affected Versions CPE Subscribe
klarnaplugin Klarna for WooCommerce 0 ~ 4.13.3 -

II. Public POCs for CVE-2026-110590

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III. Intelligence Information for CVE-2026-110590

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Patches & Fixes for CVE-2026-110590 (3)

Vendor Advisories for CVE-2026-110590 (1)

Vendor Pages for CVE-2026-110590 (3)

IV. Related Vulnerabilities

Same weakness: CWE-862

V. Comments for CVE-2026-110590

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