# CVE-2026-88828: Blacklist Manager for WooCommerce user blocking bypass

Source: https://junglewise.ai/threats/cve-2026-88828-the-blacklist-manager-for-woocommerce-wordpress-plugin-from-1-3-0  
Publisher: Junglewise Threat Intelligence, https://junglewise.ai/threats  
Published: 2026-09-28. Updated: 2026-09-28  
License: CC BY 4.0 with a link back

CVE-2026-88828 · Severity: medium · CVSS 5.4 · Published 2026-09-28

The Blacklist Manager for WooCommerce plugin fails to enforce user blocks across all authentication methods, such as XML-RPC and application passwords. An attacker with a blocked account can continue to access the site with that account's privileges, bypassing the site owner's security controls and potentially gaining unauthorized access to data or functionality.

Vendors: [WooCommerce](https://junglewise.ai/threats/vendors/woocommerce).

## Quick answers

**Is CVE-2026-88828 exploited in the wild?** No. Junglewise Threat Intelligence has no report of CVE-2026-88828 being exploited in the wild.

**How severe is CVE-2026-88828?** Medium severity, with a CVSS score of 5.4, published 28 September 2026.

**Which products and versions are affected?** WooCommerce Blacklist Manager for WooCommerce 1.3.0 to 2.3.1.

**Is there a fix for CVE-2026-88828?** A patch was published on 2026-09-28: Fixed in version 2.3.2 Junglewise finds every place you run it, drafts the upgrade and applies it once you approve.

**How is CVE-2026-88828 attacked?** It is attacked over the network, in a web application.

**Am I affected by CVE-2026-88828?** Check whether you run WooCommerce Blacklist Manager for WooCommerce at an affected version. Junglewise does that check for you around the clock: connect your code, cloud and domains, and it matches new vulnerabilities like this one against what you actually run and tells you when one reaches you.

## Technical details

The plugin implements user blocking but does not enforce this restriction on all authentication paths, particularly XML-RPC and application passwords. A blocked user account can still authenticate through these alternative paths and perform actions with their original privileges. The vulnerability affects versions 1.3.0 through 2.3.1, and is fixed in version 2.3.2.

## Affected products

- WooCommerce Blacklist Manager for WooCommerce 1.3.0 to 2.3.1

## Timeline

- 2026-09-25: disclosed: Publicly disclosed vulnerability
- 2026-09-28: patched: Fixed in version 2.3.2

## References

- [https://wordpress.org/plugins](https://wordpress.org/plugins)
- [https://wpscan.com/vulnerability/52804421-8988-4d8a-9143-04683d05873d/](https://wpscan.com/vulnerability/52804421-8988-4d8a-9143-04683d05873d/)