# Csomagpontok és Címkék WooCommerce-hez <= 4.3 - Unauthenticated Authentication Bypass via Kvikk Webhook

- **ID:** WPSEC-2026-2902
- **Plugin:** Hungarian Pickup Points & Shipping Labels for WooCommerce (`hungarian-pickup-points-for-woocommerce`), https://wordpress.org/plugins/hungarian-pickup-points-for-woocommerce/
- **Affected versions:** from 3.4.2 before 4.3.1
- **Fixed in:** 4.3.1 (Update to 4.3.1 or later.)
- **Severity:** Low 3.7 (CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:L/A:N)
- **Weakness:** CWE-287
- **Usage among sites WPSec scans:** plugin Low, affected versions Low (as of 2026-11-12)
- **Attack surface analysis:** https://attacksurface.wpsec.com/plugin/hungarian-pickup-points-for-woocommerce
- **Fix released:** 2026-11-10
- **Published:** 2026-11-12
- **URL:** https://wpsec.com/vuln/WPSEC-2026-2902/

## Description

The Hungarian Pickup Points & Shipping Labels for WooCommerce plugin for WordPress is vulnerable to Authentication Bypass via the Kvikk webhook (IPN) handler in all versions up to, and including, 4.3. This is due to the ipn_process() function, which runs on every request through the init hook, comparing the X-API-KEY request header loosely against the stored Kvikk API key. When no Kvikk API key is saved, an empty or missing header matches the empty setting. This makes it possible for unauthenticated attackers who know an order's number and its tracking number to send forged webhook requests that remove the shipping label and tracking metadata from that order, provided the site has no Kvikk API key configured.

## References

- https://wpsec.com/vuln/WPSEC-2026-2902/
- https://plugins.svn.wordpress.org/hungarian-pickup-points-for-woocommerce/tags/4.3.1/
- https://wordpress.org/plugins/hungarian-pickup-points-for-woocommerce/

Source: WPSec, https://wpsec.com/vuln/WPSEC-2026-2902/

License: CC BY 4.0 (https://creativecommons.org/licenses/by/4.0/). Free to use, share and adapt, also commercially, if you credit WPSec and link to this advisory.