CVE-2026-96669 in Food Store Plugin
Summary
by MITRE • 10/29/2026
The Food Store – Online Food Delivery & Pickup plugin for WordPress is vulnerable to Stored Cross-Site Scripting via 'service_type' Cookie in all versions up to, and including, 1.5.5 due to insufficient input sanitization and output escaping. This makes it possible for unauthenticated attackers to inject arbitrary web scripts in pages that will execute whenever a user accesses an injected page. The attack is seeded unauthenticated by supplying a payload via the ?type= query parameter on the public checkout page, which the plugin writes directly into the browser's service_type cookie; this cookie value is later persisted to order meta and rendered unescaped in the admin panel.
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Analysis
by VulDB Data Team • 10/29/2026
The vulnerability identified within The Food Store – Online Food Delivery & Pickup WordPress plugin affects all versions up to 1.5.5 and represents a critical security flaw rooted in insufficient input sanitization and output escaping mechanisms. This specific weakness allows for Stored Cross-Site Scripting, commonly referred to as XSS, which is classified under CWE-79 in the Common Weakness Enumeration standards. The core technical failure lies in how the plugin handles data derived from user-supplied inputs without applying appropriate validation or encoding procedures before storage and subsequent rendering. Specifically, the vulnerability manifests through the service_type cookie, which serves as a conduit for malicious payloads to persist within the application's state management system rather than being discarded after immediate use.
The attack vector is particularly concerning because it can be initiated by unauthenticated attackers without requiring any form of user authentication or privilege escalation on the target WordPress site. The exploitation process begins when an attacker crafts a URL containing a malicious payload appended as a query parameter, specifically targeting the type variable within the public checkout page endpoint. When a victim interacts with this manipulated link or if the application logic automatically processes such parameters during normal browsing sessions, the plugin captures the value of the type parameter and writes it directly into the browser's service_type cookie. This action effectively seeds the malicious script into the client-side environment without triggering any security warnings or validation checks that would typically prevent such injection attempts in a secure implementation.
The severity of this vulnerability is amplified by its stored nature, which distinguishes it from reflected XSS attacks where payloads are only executed during the immediate request. In this scenario, the value contained within the service_type cookie is not merely displayed temporarily but is persisted to order meta data on the server side. This means that once a legitimate user completes an order or interacts with the checkout process using the compromised session, the malicious script becomes part of the permanent record associated with that transaction in the WordPress database. Consequently, whenever this data is retrieved and rendered within the administrative panel without proper escaping, the embedded JavaScript code executes automatically in the context of the administrator's browser session.
The operational impact of this vulnerability extends beyond simple defacement or minor nuisance scripts. Because the payload executes in the context of an authenticated user, particularly one with administrative privileges who views order details, attackers can achieve arbitrary code execution within the scope of that user's permissions. This enables a range of malicious activities including session hijacking, where the attacker steals cookies to impersonate the administrator; credential harvesting through keylogging scripts embedded in the page; or redirection attacks that funnel users to phishing sites designed to steal sensitive information. The persistence of this data means that every time an admin reviews orders containing tainted entries, they inadvertently trigger the malicious script, creating a reliable and repeatable attack surface that does not require further interaction from other victims beyond viewing the affected pages.
From a threat intelligence perspective aligned with MITRE ATT&CK frameworks, this vulnerability facilitates techniques associated with Client-Side Scripting Injection (T1059) and potentially Credential Access via Browser Session Hijacking if session tokens are exfiltrated. The lack of input validation on public-facing endpoints combined with the failure to escape output in administrative interfaces creates a classic injection pathway that undermines the integrity and confidentiality of the web application environment. Mitigation strategies must prioritize immediate patching to version 1.5.6 or later, where developers have addressed these sanitization gaps. In the interim, administrators should implement strict input validation rules on server-side endpoints accepting checkout parameters and ensure all output rendered in admin panels is properly escaped using WordPress-specific functions like esc_html or wp_kses_post to neutralize script execution vectors before they reach the browser rendering engine.