Klarna Checkout for WooCommerce: A security weakness
Klarna Checkout for WooCommerce is affected by a security weakness. The vulnerable path is reachable without authentication. The resulting impact depends on how the affected component exposes the vulnerable operation.
- Component
- Klarna Checkout for WooCommerce
- Plugin slug
klarna-checkout-for-woocommerce- Affected
- See vendor advisory
- Safe version
- See mitigation notes
- Published
- Apr 17, 2025
- Weakness
- NVD-CWE-noinfo
This CVE was published Apr 17, 2025 and is one of 1 known issue for this plugin.
Update, patch or deactivate.
Update Klarna Checkout for WooCommerce to a release outside the affected range, or disable and remove it until a fixed version is available.
No confirmed safe version is listed. Consider a vendor-supported patch or temporarily restricting the affected functionality while you assess the risk.
Deactivate only when warranted by your risk profile, or when advised by your hosting provider in the limited circumstances where the vulnerability cannot otherwise be mitigated. If you’re unsure which action is appropriate, contact Fused or your hosting provider for guidance.
Technical description
The Klarna Checkout for WooCommerce WordPress plugin before 2.13.5 exposes an unauthenticated WooCommerce Ajax endpoint that allows an attacker to flood the log files with data at the maximum size allowed for a POST parameter per request. This can result in rapid consumption of disk space, potentially filling the entire disk.
CVE / CNA vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H