CVE-2026-88828 Blacklist Manager for WooCommerce 1.3.0 - 2.3.1 - Blocked User Restriction Bypass via XML-RPC and Application Passwords
Blocked users can bypass restrictions and authenticate via XML-RPC or Application Passwords in the Blacklist Manager for WooCommerce plugin.
- 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-2026-88828?
CVE-2026-88828 is a medium-severity authentication bypass vulnerability in Unknown Blacklist Manager, published on 28 Sep 2026. Any signed-in user can exploit it over the network, with no action from the victim.
Official description
The Blacklist Manager for WooCommerce WordPress plugin from 1.3.0 to 2.3.1 does not enforce its user blocking on every authentication path, allowing the holder of an account the site owner has blocked to keep authenticating with that account's privileges, without the block being enforced or recorded.
Weakness: CWE-288
Which versions are affected by CVE-2026-88828?
How do I fix CVE-2026-88828?
No fix has been published for CVE-2026-88828 yet. Limit exposure of the affected software until one is available.
Upgrade, and rotate credentials and sessions that may have been exposed. More about Authentication bypass.
Is CVE-2026-88828 being exploited?
There is no known exploitation of CVE-2026-88828 in the wild and no public exploit code.
Sources
Also known as GHSA-gg4x-5759-6rq2.