CVE-2026-9240: Auth Bypass (CVSS 4.3)

Description

The Colissimo Officiel : Méthodes de livraison pour WooCommerce plugin for WordPress is vulnerable to unauthorized modification of data due to a missing capability check on the updateShippingMethod() function (registered to the wp_ajax_lpc_order_affect AJAX action) in versions up to, and including, 2.9.0. This is due to the handler performing no current_user_can() capability check and no nonce verification before reading an attacker-supplied order_id and modifying that order's shipping method, pickup-point meta, and shipping address. This makes it possible for authenticated attackers, with Subscriber-level access and above, to create or modify the shipment information (shipping method, pickup relay data, and shipping address) of arbitrary WooCommerce orders, including orders placed by other users.

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CVSS v3.1 Score

4.3

MEDIUM

CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:N

EPSS — Exploit Prediction

0.0020

Probability of exploitation

0.10%

Percentile rank

EPSS estimates the probability that this vulnerability will be exploited in the wild within the next 30 days. A higher score means more likely to be exploited.

Weakness Type (CWE)

CWE-862 Missing Authorization

References

Other References

https://plugins.trac.wordpress.org/browser/colissimo-shipping-methods-for-woocommerce/tags/2.9.0/admin/orders/lpc_admin_order_affect.php#L52 https://plugins.trac.wordpress.org/browser/colissimo-shipping-methods-for-woocommerce/tags/2.9.0/admin/orders/lpc_admin_order_affect.php#L84 https://plugins.trac.wordpress.org/browser/colissimo-shipping-methods-for-woocommerce/tags/2.9.0/admin/orders/lpc_admin_order_affect.php#L85 https://plugins.trac.wordpress.org/changeset?reponame=&old=3553367%40colissimo-shipping-methods-for-woocommerce&new=3553367%40colissimo-shipping-methods-for-woocommerce https://www.wordfence.com/threat-intel/vulnerabilities/id/16041d22-51ff-4fa4-99fb-20a60b557634?source=cve

Frequently Asked Questions

What is CVE-2026-9240? +

The Colissimo Officiel : Méthodes de livraison pour WooCommerce plugin for WordPress is vulnerable to unauthorized modification of data due to a missing capability check on the updateShippingMethod() function (registered to the wp_ajax_lpc_order_affect AJAX action) in versions up to, and including, 2.9.0. This is due to the handler performing no current_user_can() capability check and no nonce verification before reading an attacker-supplied order_id and modifying that order's shipping method, pickup-point meta, and shipping address. This makes it possible for authenticated attackers, with Subscriber-level access and above, to create or modify the shipment information (shipping method, pickup relay data, and shipping address) of arbitrary WooCommerce orders, including orders placed by other users. It has a CVSS v3.1 base score of 4.3 (MEDIUM).

How severe is CVE-2026-9240? +

CVE-2026-9240 has a CVSS v3.1 score of 4.3 out of 10, rated MEDIUM. This is a medium-severity vulnerability that should be remediated as part of regular maintenance. The EPSS score is 0.0020, placing it in the 0th percentile for exploitation probability.

How do I check if I'm vulnerable to CVE-2026-9240? +

You can use Secably's free Website Scanner to check your website for known vulnerabilities. For infrastructure scanning, use the Port Scanner to identify exposed services that may be affected. Check the vendor advisories linked above for specific patch and version information.

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