CVE-2026-66445 in Open User Map Plugin
Summary
by MITRE • 07/27/2026
Contributor Cross Site Scripting (XSS) in Open User Map <= 1.4.46 versions.
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Analysis
by VulDB Data Team • 07/28/2026
Open User Map versions 1.4.46 and earlier contain a contributor cross site scripting vulnerability that allows authenticated users with contributor privileges to execute malicious scripts in the context of other users' browsers. This vulnerability falls under the CWE-79 weakness category, which specifically addresses cross site scripting flaws in web applications. The flaw exists due to insufficient input validation and output encoding mechanisms within the plugin's codebase, particularly when processing user-generated content submitted through contributor accounts.
The technical implementation of this vulnerability stems from the plugin's failure to properly sanitize user inputs before rendering them on web pages. When contributors submit content that includes script tags or malicious payloads, these inputs are not adequately filtered or escaped before being displayed to other users who visit the affected pages. This creates an environment where a malicious contributor can inject javascript code that executes in the browsers of other users who view the compromised content.
The operational impact of this vulnerability is significant as it enables privilege escalation through social engineering techniques. An attacker with contributor access can craft malicious payloads that, when viewed by administrators or other high-privilege users, could steal session cookies, redirect users to phishing sites, or perform actions on behalf of the victims. The vulnerability specifically affects the plugin's handling of user-generated content in map-related features where contributors might submit location descriptions, comments, or other interactive elements. This creates a persistent threat vector that can be exploited repeatedly as long as the vulnerable plugin remains installed.
Mitigation strategies should focus on immediate patching of the Open User Map plugin to versions 1.4.47 or later, which contain the necessary security fixes. Additionally, administrators should implement input validation at multiple layers including server-side sanitization and output encoding techniques. The principle of least privilege should be enforced by limiting contributor capabilities to only essential functions while monitoring user activities for suspicious behavior patterns. Security measures aligned with the ATT&CK framework's T1566 technique for social engineering can help detect and prevent exploitation attempts through user behavior analysis and content monitoring systems. Organizations should also conduct regular security audits of third-party plugins and maintain updated vulnerability databases to identify similar issues in other installed software components.