Advanced Country Blocker <= 2.3.1 - Unauthenticated Authorization Bypass via Insecure Default Secret Key
Strategic Overview
- Status
- Patched in 2.3.2
- Affected Plugin
- Advanced Country Blocker
- Affected Version
<= 2.3.1- CVSS
- 5.3Medium
- Weakness type
- CWE-1188 · Initialization of a Resource with an Insecure Default
- CVE
CVE-2026-1675
At a glance
CVE-2026-1675 is a medium-severity Initialization of a Resource with an Insecure Default vulnerability in the Advanced Country Blocker WordPress plugin, affecting versions <= 2.3.1. It carries a CVSS score of 5.3 (reachable over the network; low attack complexity). Exploitation requires no authentication. The issue is fixed in version 2.3.2; sites on affected versions should update now. Disclosed February 2026, reported by Hector Flores.
Vulnerability Overview
The Advanced Country Blocker plugin for WordPress is vulnerable to Authorization Bypass in all versions up to, and including, 2.3.1 due to the use of a predictable default value for the secret bypass key created during installation without requiring users to change it. This makes it possible for unauthenticated attackers to bypass the geolocation blocking mechanism by appending the key to any URL on sites where the administrator has not changed the default value.
Technical Analysis
The vector marks this flaw as remotely reachable over the network, with low attack complexity — no special timing or configuration is needed, and no privileges on the target site, and no interaction from a victim user.
CWE-1188: Initialization of a Resource with an Insecure Default
The product initializes or sets a resource with a default that is intended to be changed by the product's installer, administrator, or maintainer, but the default is not secure.
Remediation
Update to version 2.3.2, or a newer patched version
How does WordSec protect against this?
This one needs no account at all, which puts it outside what login hardening can reach; WordSec's login security narrows the account-level paths around it, and the firewall is what inspects the request itself. None of that substitutes for the fix: Advanced Country Blocker 2.3.2 closes this, and updating the plugin is the step that ends it.
- Login Security
- Alerts
External References
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