CVE-2026-82530

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IP2Location Country Blocker WordPress Plugin Access Control Bypass

Publication date: 2026-09-09

Last updated on: 2026-09-09

Assigner: VulnCheck

Description

IP2Location Country Blocker plugin for WordPress before 2.45.0 contains an access control bypass vulnerability that allows unauthenticated remote attackers to circumvent IP-based restrictions by forging the X-Real-IP HTTP header. Attackers can set the X-Real-IP header to an allowlisted IP address to bypass page, link, or site-wide access restrictions and access otherwise-blocked resources.

CVSS Scores

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Meta Information

Published

2026-09-09

Last Modified

2026-09-09

Generated

2026-09-29

AI Q&A

2026-09-10

EPSS Evaluated

2026-09-27

NVD

CVE-2026-82530

EUVD

EUVD-2026-75018

Affected Vendors & Products

Vendor	Product	Version / Range
ip2location	country_blocker	to 2.45.0 (exc)

Helpful Resources

Exploitability

CWE

KEV

CWE ID	Description
CWE-290	This attack-focused weakness is caused by incorrectly implemented authentication schemes that are subject to spoofing attacks.

Attack-Flow Graph

Executive Summary

This vulnerability is an access control bypass in the IP2Location Country Blocker WordPress plugin before version 2.45.0. It allows unauthenticated remote attackers to bypass IP-based restrictions by forging the X-Real-IP HTTP header. Attackers can set this header to an allowlisted IP address to access blocked resources.

Detection Guidance

To detect this vulnerability, monitor HTTP requests for the X-Real-IP header being set to allowlisted IP addresses. Check WordPress logs for unusual access attempts bypassing IP restrictions. Use tools like curl to test if the header manipulation bypasses access controls: curl -H "X-Real-IP: [ALLOWLISTED_IP]" [TARGET_URL].

Impact Analysis

This vulnerability could allow unauthorized users to bypass IP-based restrictions on your WordPress site, potentially accessing restricted pages, links, or the admin area. It undermines the plugin's intended access control, enabling attackers to bypass geolocation or proxy-based blocks.

Compliance Impact

This vulnerability allows unauthorized access to restricted resources by bypassing IP-based restrictions, which could lead to unauthorized data exposure or access. This may violate compliance requirements under GDPR (data protection) or HIPAA (healthcare data privacy) if sensitive data is accessed without proper authorization.

Mitigation Strategies

Immediately update the IP2Location Country Blocker plugin to version 2.45.0 or later. Disable the plugin temporarily if an update is not immediately available. Review server logs for signs of exploitation and block suspicious IP ranges. Ensure no caching plugins interfere with the plugin's functionality.

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