CVE-2022-50961: IP2Location Country Blocker XSS Flaw

CVE-2022-50961 Overview

CVE-2022-50961 is a stored cross-site scripting (XSS) vulnerability in the WordPress plugin IP2Location Country Blocker version 2.26.7. The flaw resides in the plugin's Frontend Settings interface, specifically within the URL field of the Display page settings. Authenticated users can inject arbitrary JavaScript that executes when administrators or other authenticated users browse the affected settings page. The vulnerability is classified under CWE-79 for improper neutralization of input during web page generation.

Critical Impact

An authenticated attacker can persist JavaScript in plugin settings to hijack administrator sessions, perform actions in the WordPress admin context, or pivot to further site compromise.

Affected Products

• WordPress Plugin IP2Location Country Blocker version 2.26.7
• WordPress sites with the plugin installed and activated
• Administrator and authenticated user sessions interacting with the plugin's settings interface

Discovery Timeline

• 2026-05-10 - CVE-2022-50961 published to the National Vulnerability Database
• 2026-05-12 - Last updated in NVD database

Technical Details for CVE-2022-50961

Vulnerability Analysis

The vulnerability is a stored cross-site scripting flaw in the Frontend Settings interface of IP2Location Country Blocker 2.26.7. The plugin accepts user-supplied input in the URL field of the Display page settings without applying sufficient output encoding or input sanitization. Once submitted, the malicious payload is persisted in the WordPress database and later rendered into the settings page HTML. When any authenticated user, including an administrator, navigates to the affected settings page, the stored payload executes within the browser context.

The issue requires authentication, which limits the initial attack surface. However, exploitation is feasible in multi-user WordPress environments where contributor, editor, or low-privileged accounts can reach the plugin configuration interface. The payload runs with the privileges of the viewing user, making administrators a high-value target.

Root Cause

The root cause is missing input sanitization and output encoding on the URL parameter within the Frontend Settings handler. The plugin trusts user-controlled values and emits them directly into the HTML response, allowing arbitrary <script> content or event-handler attributes to render as executable code.

Attack Vector

The attack vector is network-based and requires low privileges plus user interaction. An attacker authenticates to WordPress, submits a crafted payload to the URL field on the Display page settings, and waits for an administrator to view the settings page. The stored script then executes in the administrator's browser, enabling session theft, CSRF-style actions through the admin AJAX endpoints, or injection of additional persistence mechanisms. Public exploitation details are documented in Exploit-DB #50709 and the VulnCheck Security Advisory.

Detection Methods for CVE-2022-50961

Indicators of Compromise

• Unexpected <script> tags, javascript: URIs, or event-handler attributes stored in WordPress wp_options rows associated with the IP2Location Country Blocker plugin.
• Outbound requests from administrator browsers to unfamiliar domains immediately after visiting the plugin settings page.
• New or modified WordPress administrator accounts created without authorized change requests.
• Anomalous POST requests to wp-admin/admin.php or options.php targeting the plugin's settings handler.

Detection Strategies

• Inspect plugin option values in the WordPress database for HTML or JavaScript content in fields expected to hold URLs.
• Deploy web application firewall rules that flag script-like payloads submitted to WordPress admin endpoints.
• Review WordPress audit logs for settings modifications performed by non-administrator accounts.

Monitoring Recommendations

• Enable a WordPress audit logging plugin and forward events to a centralized SIEM for correlation.
• Monitor administrator session activity for unusual JavaScript-driven actions following navigation to plugin configuration pages.
• Alert on Content Security Policy (CSP) violation reports originating from /wp-admin/ paths.

How to Mitigate CVE-2022-50961

Immediate Actions Required

• Update the IP2Location Country Blocker plugin to a version newer than 2.26.7 once a fixed release is published by the vendor.
• Restrict access to the plugin's settings page to trusted administrator accounts only.
• Audit existing plugin configuration values and remove any unexpected HTML or JavaScript content from the URL field.
• Rotate WordPress administrator credentials and active session tokens if compromise is suspected.

Patch Information

Consult the WordPress Plugin page for IP2Location Country Blocker for the latest available version and changelog. Apply the vendor-supplied update through the WordPress plugin manager once a patched release addresses the stored XSS in the Frontend Settings handler.

Workarounds

• Temporarily deactivate the IP2Location Country Blocker plugin if a patched version is not yet available.
• Implement a strict Content Security Policy that blocks inline scripts within the WordPress admin interface.
• Limit the number of accounts with access to plugin configuration through least-privilege role assignments.
• Place the WordPress admin area behind an authenticated reverse proxy or IP allowlist to reduce exposure.