CVE-2026-105969 in CodeAtoZ B2B Suite Plugin
Summary
by MITRE • 10/15/2026
The CodeAtoZ B2B Suite for WooCommerce WordPress plugin before 1.6.1 does not properly restrict access to guest-submitted quotes, allowing unauthenticated users to retrieve another guest's quote, including the buyer's name, email address and requested line items, by supplying an enumerable identifier.
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Analysis
by VulDB Data Team • 10/15/2026
The vulnerability identified in CodeAtoZ B2B Suite for WooCommerce WordPress plugin versions prior to 1.6.1 represents a critical failure in access control mechanisms within a business-to-business e-commerce environment. This flaw specifically affects the handling of guest-submitted quotes, which are temporary estimates provided to potential customers who have not created an account on the platform. In typical B2B workflows, these quotes often contain sensitive commercial information such as pricing negotiations, specific product line items, and buyer contact details including names and email addresses. The core technical deficiency lies in the application's logic for validating access rights when retrieving quote data via API endpoints or internal handlers. Instead of verifying that the requesting user session matches the owner of the requested quote, the system relies solely on a predictable and enumerable identifier associated with the quote record.
From a technical perspective, this constitutes an insecure direct object reference vulnerability where the application uses sequential or easily guessable identifiers to manage resource access without implementing additional authentication checks for guest users. When an unauthenticated user submits a request to retrieve a specific quote by providing its unique ID, the backend process fails to cross-reference this identifier against any session data or ownership metadata before returning the payload. Because these identifiers are enumerable, typically incrementing integers or simple hashes that can be iterated through systematically, attackers can perform automated enumeration attacks. By cycling through potential IDs within a known range, an adversary can harvest multiple quote records in rapid succession without needing valid credentials for any specific user account.
The operational impact of this vulnerability is significant due to the nature of B2B transactions which often involve negotiated pricing and confidential procurement strategies. Successful exploitation allows unauthenticated actors to exfiltrate personally identifiable information such as buyer names and email addresses, facilitating targeted phishing campaigns or social engineering attacks against corporate clients. Furthermore, access to requested line items reveals supply chain dependencies and inventory preferences that competitors could exploit for market intelligence purposes. The exposure of negotiated pricing structures undermines the confidentiality essential to B2B relationships and may lead to financial losses if customers discover their private quotes are publicly accessible via simple URL manipulation or API calls.
This vulnerability aligns with CWE-639, which describes authorization issues related to bypassing protection mechanisms for indirect object references. It also maps directly to MITRE ATT&CK technique T1078, specifically the aspect of valid accounts being used without proper authentication checks in contexts where session management is flawed or absent. In this case, while no account exists, the principle remains that access control decisions are not properly enforced based on user identity relative to the resource. The lack of rate limiting and CAPTCHA protections further exacerbates the risk by allowing high-volume enumeration attempts that can bypass manual detection thresholds often employed in basic web application firewalls.
Mitigation strategies must prioritize immediate patching to version 1.6.1 or later, where the developers have addressed these access control flaws. For organizations unable to update immediately due to compatibility constraints with other plugins or custom code modifications, temporary compensating controls are essential. These include implementing strict rate limiting on quote-related API endpoints to prevent bulk enumeration and deploying web application firewall rules that detect sequential ID patterns in request parameters. Additionally, developers should enforce server-side validation ensuring that any retrieval of quote data requires a valid session token tied explicitly to the creator of that specific quote record, even for guest users who may be assigned temporary unique tokens upon submission rather than relying on static enumerable IDs exposed in URLs or API calls.