CVE-2026-110590 json
Klarna for WooCommerce <= 4.13.3 - Missing Authorization to Unauthenticated Sensitive Information Disclosure via 'order-pay' Endpoint
published 24d ago modified 24d ago also EUVD-2026-102650
- cvss
- 7.5
- version 3.1, CNA
- cisa kev
- Not listed
- not in CISA's catalog
- epss
- 0.3%
- EPSS 0.3% chance of exploitation in 30 days, percentile 25%
- public exploits
- 0
- none known
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 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.
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Check with FencerCISA SSVC
- Exploitation
- none
- Automatable
- yes
- Technical impact
- partial
- Assessed
- 24d ago
Exploit prediction
0.33% chance of exploitation in the next 30 days, higher than 25% of all scored CVEs (FIRST EPSS, 2026-11-09).
CVSS scores
| assigned by | version | score | vector |
|---|---|---|---|
| CNA | 3.1 | 7.5 | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N |
Affected products
- klarnaplugin Klarna for WooCommerce
Classification
- Weakness
-
- CWE-862 Missing Authorization
- Technology feeds
References
- wordfence.com /threat-intel/vulnerabilities/id/c3abb96e-6ee2-4992-a122-9f661da9a4d6?source=cve
- plugins.trac.wordpress.org /browser/klarna-payments-for-woocommerce/tags/4.13.3/classes/class-kp-assets.php#L185
- plugins.trac.wordpress.org /browser/klarna-payments-for-woocommerce/tags/4.13.3/classes/class-kp-assets.php#L198
- plugins.trac.wordpress.org /browser/klarna-payments-for-woocommerce/tags/4.13.3/classes/class-kp-assets.php#L204
- plugins.trac.wordpress.org /browser/klarna-payments-for-woocommerce/tags/4.13.3/classes/class-kp-assets.php#L159
- github.com /krokedil/klarna-payments-for-woocommerce/compare/4.13.3...f5362605a9901b7f9264cfa3b22fd782a7a3097b
- plugins.trac.wordpress.org /changeset/3740915/klarna-payments-for-woocommerce/trunk/classes/class-kp-assets.php
Sources
- CVE List CVE-2026-110590
- NVD CVE-2026-110590
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