CVE-2025-11703 is a vulnerability classified under CWE-349, which involves the acceptance of extraneous untrusted data alongside trusted data. The WP Go Maps plugin for WordPress, widely used to embed and manage maps and location searches, suffers from a cache poisoning flaw in all versions up to and including 9.0.48. The root cause is the plugin's design choice to serve cached location search results based on user input rather than validating or generating cache entries solely from trusted server-side data. This architectural weakness allows an unauthenticated attacker to inject malicious or manipulated data into the cache storage. When subsequent users request location data, they may receive poisoned or incorrect results, undermining the integrity of the information presented. The vulnerability does not expose confidential data nor does it impact system availability, but it compromises data integrity by allowing tampered location information to be served. The CVSS v3.1 base score is 5.3 (medium severity), reflecting the ease of remote exploitation without authentication or user interaction, but limited impact scope. No patches or known exploits are currently available, though the vulnerability has been publicly disclosed. This issue is particularly relevant for websites that rely heavily on accurate location data for business operations or user navigation, as poisoned caches could misdirect users or damage organizational reputation.

For European organizations, the primary impact of CVE-2025-11703 lies in the integrity of location-based data served via WordPress sites using the WP Go Maps plugin. Poisoned cache entries could lead to incorrect or misleading location search results, potentially disrupting customer experience, logistics, or service delivery. While confidentiality and availability remain unaffected, the integrity compromise could erode trust in digital services, especially for businesses relying on accurate geographic information such as retail, travel, real estate, and local services. Organizations in sectors with regulatory requirements for data accuracy and integrity may face compliance risks if manipulated data leads to erroneous decisions or customer harm. Additionally, attackers could leverage this vulnerability to conduct targeted misinformation campaigns or reputational attacks by injecting false location data. The lack of authentication and user interaction requirements lowers the barrier for exploitation, increasing risk exposure. However, the absence of known exploits in the wild suggests limited immediate threat but underscores the need for proactive mitigation.

To mitigate CVE-2025-11703 effectively, European organizations should first monitor for and apply any official patches released by the WP Go Maps plugin developers promptly. Until a patch is available, administrators should consider disabling the plugin or its location search caching features if feasible. Implementing server-side validation and sanitization of all inputs used to generate cache entries is critical to prevent acceptance of untrusted data. Organizations can also deploy Web Application Firewalls (WAFs) with custom rules to detect and block suspicious requests attempting to manipulate cache parameters. Regularly auditing cache contents for anomalies or unexpected data can help detect poisoning attempts early. Additionally, restricting access to cache storage locations and employing integrity verification mechanisms, such as cryptographic hashes or signatures for cached data, can reduce risk. Educating site administrators about the risks and encouraging minimal use of caching for dynamic location data until the vulnerability is resolved will further reduce exposure.