EUVD-2026-42558
GHSA-5f86-c5fx-8mw6
Severity by source
AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:N
Network-accessible AJAX endpoint (AV:N), no special conditions (AC:L), subscriber authentication required (PR:L), integrity-only impact on order metadata (I:L), no confidentiality or availability breach.
Primary rating from Vendor (Wordfence).
CVSS VectorVendor: Wordfence
Lifecycle Timeline
2DescriptionCVE.org
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.
AnalysisAI
Unauthorized order modification in the Colissimo Officiel shipping plugin for WordPress (versions up to and including 2.9.0) allows any authenticated subscriber-level user to overwrite the shipping method, pickup-relay metadata, and shipping address of arbitrary WooCommerce orders - including orders belonging to other customers. The vulnerability stems from a completely unguarded AJAX handler: no capability check and no nonce verification are performed before acting on caller-supplied input. No public exploit code has been identified at time of analysis, and the issue is not listed in the CISA KEV catalog, though Wordfence has confirmed and disclosed it with specific source-line references.
Technical ContextAI
WordPress registers AJAX actions via the wp_ajax_{action} hook, which is accessible to any logged-in user unless the handler explicitly calls current_user_can() to verify the caller's role. The affected handler, updateShippingMethod() (registered to wp_ajax_lpc_order_affect, sourced in lpc_admin_order_affect.php at lines 52, 84, and 85 per the trac browser references), accepts an attacker-controlled order_id POST parameter and uses it to write WooCommerce order meta - shipping method, pickup point/relay data, and shipping address - without validating whether the requester owns or has administrative rights over that order. CWE-862 (Missing Authorization) precisely describes this class: the code path exists and is reachable, but the authorization gate that should gate it was never implemented. The affected CPE is cpe:2.3:a:iscpcolissimo:colissimo_shipping_methods_for_woocommerce:*:*:*:*:*:*:*:* covering all versions through 2.9.0.
RemediationAI
The upstream fix is available as changeset 3553367 in the WordPress plugin SVN repository (https://plugins.trac.wordpress.org/changeset?reponame=&old=3553367%40colissimo-shipping-methods-for-woocommerce&new=3553367%40colissimo-shipping-methods-for-woocommerce); however, a tagged patched release version has not been independently confirmed from the available input data - site operators should check the WordPress plugin directory for a version newer than 2.9.0 and update immediately upon availability. As a compensating control prior to patching, site administrators can disable the wp_ajax_lpc_order_affect AJAX action by adding a mu-plugin that removes the action hook (remove_action('wp_ajax_lpc_order_affect', ...)), though this will break the legitimate admin-side order affectation UI for shipping staff. Alternatively, restricting WordPress registration so that no untrusted subscriber accounts exist eliminates the attack surface entirely, at the cost of requiring manual account creation for all customers.
More in Wordpress Plugin
View allThe Backup Migration plugin for WordPress is vulnerable to Remote Code Execution in all versions up to, and including, 1
The Hash Form - Drag & Drop Form Builder plugin for WordPress is vulnerable to arbitrary file uploads due to missing fil
Authentication bypass in the LiteSpeed Cache WordPress plugin (versions prior to 6.5.0.1) allows unauthenticated remote
The Simple File List plugin for WordPress through version 4.2.2 contains an unauthenticated remote code execution vulner
The SureTriggers WordPress plugin through version 1.0.82 contains a privilege escalation vulnerability that allows unaut
The Ninja Forms plugin before 2.9.42.1 for WordPress allows remote attackers to conduct PHP object injection attacks via
The Business Directory Plugin - Easy Listing Directories for WordPress plugin for WordPress is vulnerable to time-based
SQL injection in the NotificationX WordPress plugin (versions up to and including 2.8.2) allows unauthenticated remote a
The POST SMTP Mailer - Email log, Delivery Failure Notifications and Best Mail SMTP for WordPress plugin for WordPress i
The MasterStudy LMS WordPress Plugin - for Online Courses and Education plugin for WordPress is vulnerable to union base
The Email Subscribers by Icegram Express plugin for WordPress is vulnerable to SQL Injection via the ‘hash’ parameter in
Remote code execution in the WP Query Console WordPress plugin (versions up to and including 1.0) by Ajit Bohra allows u
Same weakness CWE-862 – Missing Authorization
View allSame technique Authentication Bypass
View allShare
External POC / Exploit Code
Leaving vuln.today