CVE-2026-97250 in Geo Mashup Plugin
Summary
by MITRE • 09/30/2026
Unauthenticated Cross Site Scripting (XSS) in Geo Mashup <= 1.13.21 versions.
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Analysis
by VulDB Data Team • 09/30/2026
The vulnerability identified as an unauthenticated Cross-Site Scripting flaw within Geo Mashup versions up to and including 1.13.21 represents a significant security risk for websites utilizing this WordPress plugin. This specific class of web application weakness allows attackers to inject malicious client-side scripts into pages viewed by other users, exploiting the lack of proper input validation and output encoding mechanisms inherent in the software's handling of user-supplied data. The unauthenticated nature of this vulnerability is particularly concerning because it eliminates the need for an attacker to possess valid credentials or any form of prior access to the system, thereby lowering the barrier to entry significantly and enabling exploitation by a broad range of threat actors with varying levels of technical expertise.
From a technical perspective, the flaw stems from insufficient sanitization of input parameters that are subsequently rendered in HTML contexts without adequate encoding. When a user interacts with specific features of the Geo Mashup plugin, such as searching for locations or interacting with map interfaces, the application processes these inputs and reflects them back into the response body. Because the output is not properly escaped against special characters like angle brackets, quotes, and ampersands, an attacker can craft a malicious payload that bypasses existing filters. This allows the execution of arbitrary JavaScript code within the context of the victim's browser session, effectively hijacking the user's interaction with the application under the guise of legitimate content.
The operational impact of this vulnerability is severe due to its potential for widespread exploitation and data theft. An attacker can leverage this flaw to steal sensitive information such as administrative cookies, session tokens, or personally identifiable information stored in local storage if accessible via script. Furthermore, the malicious scripts can perform actions on behalf of the victim, including changing account settings, making unauthorized requests to internal APIs, or redirecting users to phishing sites designed to capture credentials. In environments where multiple administrators use the platform, this could lead to a complete compromise of the website's integrity and confidentiality, as the attacker gains the ability to manipulate content and potentially escalate privileges through social engineering tactics facilitated by the stolen session data.
This vulnerability aligns with Common Weakness Enumeration identifier CWE-79, which classifies improper neutralization of input during web page generation known as Cross-site Scripting. The attack vector is categorized under MITRE ATT&CK technique T1059, specifically Command and Scripting Interpretation via JavaScript, often utilized in conjunction with T1089 Disabling Security Tools or T1204 User Execution to achieve initial access and persistence. Understanding these mappings helps security teams contextualize the risk within broader threat landscapes and prioritize remediation efforts based on established industry standards for web application security.
To mitigate this vulnerability, immediate action is required by upgrading Geo Mashup to a version newer than 1.13.21 where the input validation and output encoding issues have been addressed by the developers. In cases where an upgrade is not immediately feasible due to compatibility constraints or other operational dependencies, administrators should implement web application firewall rules that detect and block common XSS payloads targeting the affected endpoints. Additionally, enforcing strict Content Security Policy headers can help mitigate the impact of successful exploitation by restricting the sources from which scripts are allowed to execute, thereby reducing the effectiveness of injected malicious code even if it manages to bypass input filters. Regular security audits and penetration testing should also be conducted to ensure that no similar flaws exist in other components of the web application stack.