Klarna for WooCommerce
Klarna for WooCommerce has 2 disclosed vulnerabilities in the WordSec catalog, reported between 2024 and 2026; all 2 are fixed as of October 2026. Their average CVSS score is 6.4, and the most serious one scores 7.5 out of 10. Severity breakdown: 0 critical and 1 high.
The most common weakness is Missing Authorization, behind 2 of the records (100%).
Every one of the 2 issues recorded for Klarna for WooCommerce has a vendor fix available, so running the current release closes all known holes.
2 independent researchers contributed these findings, one record each. Klarna for WooCommerce is installed on roughly 20,000 WordPress sites, so each unpatched flaw has a wide blast radius. The current release is tested up to WordPress 7.1.3.
CVE-2026-110590Klarna for WooCommerce <= 4.13.3 - Missing Authorization to Unauthenticated Sensitive Information Disclosure via 'order-pay' Endpoint
Read the full analysisVulnerability Records

Klarna for WooCommerce
Author
Klarna
woocommerceGrow your business for increased sales and enhanced shopping experiences at no extra costs. Millions shop and pay with Klarna Klarna is the preferred payment option for both brands and customers, used by millions of shoppers every month, online and in-store. | 100M+ Shoppers | 2.9M+ Daily Transactions | 720K+ Retailers Globally | More ways to pay, more purchases Grow your business with our flexible payment options and smart shopping solutions. Unlock higher purchase power for your customers by giving them the full flexibility of how and when they want to pay. Brands using Klarna see: | 40% increase in average order value | 20% increase in conversion | 45% higher purchase frequency | You’ll always be paid in full and upfront, while your customers pay at a later date. Klarna supports high value orders, and everyday purchases. Payment options include: Feature Description Pay Now, with direct payments Pay Now accepts all direct payments for a fast, convenient checkout. Buy now, Pay Later Pay Later is a deferred payment that will give shoppers an extra 14 or 30 days before they buy. Pay In N Pay in N lets you split your payment in several payments, spread over a relatively short amount of time, typically less than 60 days, and does not carry interest. Two most common variations are Pay in 4 and Pay in 3. Financing Financing offers long-term, monthly payments to make larger purchases possible for your customers. Available in 6, 12, 18, and 24 month terms. Go to Klarna to get details about all payment methods and their availability by market. How to Get Started Sign up for Klarna. Install the plugin on your site. Smart Solutions to Maximize Sales On-site messaging: Personalized messaging throughout the shopper journey for higher conversion rates. Express checkout: A faster checkout process to lower the threshold for purchase completion. Standalone payment methods complementing your existing checkout with a Klarna hosted widget For more details, visit the Klarna Payments page.
Vulnerability data © Defiant, Inc., provided under the Wordfence Intelligence T&C