CVE-2026-15001
Received Received - Intake

Privilege Escalation in bLoyal WordPress Plugin

Publication date: 2026-08-15

Last updated on: 2026-08-15

Assigner: Wordfence

Description
The bLoyal: Loyalty & Promotions by bLoyal plugin for WordPress is vulnerable to Privilege Escalation in all versions up to, and including, 3.1.611.78. This is due to the AJAX actions `save_bloyal_configuration_data` and `save_bloyal_accesskeyverification_data` being registered without any capability or nonce checks, and the `bloyal_customer_auto_login` function unconditionally trusting the `Customer.ExternalId` value returned by whichever API URL is stored in the plugin's options. This makes it possible for authenticated attackers, with Subscriber-level access and above, to overwrite the plugin's bLoyal Loyalty Engine API URL (`bloyal_custom_loyaltyengine_api_url`) and the `is_bloyal_custom_api_url` flag via the unprotected AJAX actions, then trigger the unauthenticated `/cart` REST route to cause `bloyal_customer_auto_login` to fetch customer data from an attacker-controlled endpoint and call `wp_set_auth_cookie()` with an attacker-supplied `Customer.ExternalId`, thereby authenticating as any WordPress user including the site Administrator.

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Meta Information

Published
2026-08-15
Last Modified
2026-08-15
Generated
2026-08-15
AI Q&A
2026-08-15
EPSS Evaluated
N/A
NVD
CVE-2026-15001
EUVD
EUVD-2026-58841

Affected Vendors & Products

Showing 1 associated CPE
Vendor Product Version / Range
bloyal loyalty_and_promotions to 3.1.611.78 (inc)

Helpful Resources

Exploitability

CWE
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KEV
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CWE ID Description
CWE-269 The product does not properly assign, modify, track, or check privileges for an actor, creating an unintended sphere of control for that actor.

Attack-Flow Graph

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Executive Summary

This vulnerability is a privilege escalation issue in the bLoyal WordPress plugin. It allows authenticated attackers with Subscriber-level access or higher to manipulate plugin settings and authenticate as any WordPress user, including administrators. The flaw exists because certain AJAX actions lack proper capability and nonce checks, and the plugin trusts unvalidated user input from an attacker-controlled API endpoint.

Impact Analysis

If exploited, this vulnerability could allow attackers to gain full administrative access to a WordPress site. This means they could take control of the site, steal data, install malicious software, or disrupt operations. Even users with minimal access could escalate their privileges to cause significant harm.

Compliance Impact

This vulnerability could lead to unauthorized access to sensitive user data, violating compliance requirements under GDPR, HIPAA, and other regulations. Unauthorized access may result in data breaches, leading to legal penalties, reputational damage, and loss of trust from users and regulators.

Mitigation Strategies

Update the bLoyal plugin to the latest version beyond 3.1.611.78 immediately. Disable the plugin temporarily if an update is not available. Review user roles with Subscriber access or higher for unauthorized changes. Monitor for suspicious API URL modifications in plugin settings.

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