CVE-2026-15001 Privilege escalation in bLoyal: Loyalty & Promotions by bLoyal
Authenticated subscribers can escalate privileges to Administrator by manipulating plugin API settings to trigger auto-login with attacker-controlled data.
- Exploited in the wild
- Not known
- Login needed
- Any signed-in user
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- None listed
What is CVE-2026-15001?
CVE-2026-15001 is a high-severity vulnerability in connectordev bLoyal: Loyalty & Promotions by bLoyal, published on 15 Aug 2026. Any signed-in user can exploit it over the network, with no action from the victim.
Official 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.
Weakness: CWE-269
Which versions are affected by CVE-2026-15001?
How do I fix CVE-2026-15001?
No fix has been published for CVE-2026-15001 yet. Limit exposure of the affected software until one is available.
Is CVE-2026-15001 being exploited?
There is no known exploitation of CVE-2026-15001 in the wild and no public exploit code.
Sources
Also known as GHSA-5h38-4j4g-wf4g.