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.

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

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.

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

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