CVE-2026-10525 in NEX-Forms Plugin
Summary
by MITRE • 07/17/2026
The NEX-Forms WordPress plugin before 9.2.3 does not sanitise and escape some submitted form data before storing it and outputting it back in the admin dashboard, leading to a Stored Cross-Site Scripting vulnerability which could allow unauthenticated users to perform Stored Cross-Site Scripting attacks against high privilege users such as administrators when they view the submitted entries.
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Analysis
by VulDB Data Team • 07/17/2026
The NEX-Forms WordPress plugin version 9.2.2 and earlier contains a critical stored cross-site scripting vulnerability that arises from inadequate input sanitization and output escaping mechanisms. This flaw exists in the plugin's handling of form data submission processes where user inputs are stored in the database without proper sanitization before being rendered back in the administrator dashboard. The vulnerability affects the plugin's admin interface where submitted form entries are displayed, creating an environment where malicious scripts can persist and execute when privileged users view these entries. The flaw represents a classic stored xss vector that leverages the trust relationship between the WordPress admin interface and the data it displays, allowing attackers to inject malicious code that executes in the context of high-privilege user sessions.
The technical implementation of this vulnerability stems from the plugin's failure to properly sanitize user-supplied data before storage and subsequent output rendering. When form submissions are processed, the plugin stores raw user input directly into the database without applying appropriate sanitization filters or escaping mechanisms. This occurs specifically in the administrative dashboard where submitted entries are displayed, creating a persistent threat vector. The vulnerability is particularly dangerous because it does not require authentication to exploit, as attackers can craft malicious payloads that will execute when administrators view the form submissions. The stored nature of this vulnerability means that the malicious code persists even after the initial submission, making it particularly effective for targeting administrators who regularly monitor form submissions.
The operational impact of this vulnerability extends beyond simple script execution, as it provides potential attackers with a pathway to escalate privileges and compromise entire WordPress installations. When high-privilege users such as administrators view the vulnerable form entries in the admin dashboard, their browsers execute the stored malicious scripts, potentially allowing attackers to steal session cookies, modify plugin configurations, or even gain complete administrative control over the WordPress site. This vulnerability aligns with CWE-79 which identifies cross-site scripting flaws, and represents a specific implementation weakness where data flows from untrusted sources through application logic without proper sanitization. The ATT&CK framework categorizes this as a web application attack vector where adversaries leverage stored xss to maintain persistence and escalate privileges within targeted environments.
Mitigation strategies for this vulnerability require immediate plugin updates to version 9.2.3 or later, which addresses the sanitization issues in form data handling. System administrators should also implement additional defensive measures including restricting administrative access to only necessary personnel, implementing content security policies to limit script execution, and monitoring dashboard access logs for suspicious activity. Network-level protections such as web application firewalls can help detect and block known malicious payload patterns, while regular security audits of installed plugins should verify proper sanitization practices. The vulnerability demonstrates the critical importance of input validation and output escaping in web applications, particularly in administrative interfaces where sensitive data is displayed. Organizations should also consider implementing automated patch management systems to ensure timely deployment of security updates and maintain comprehensive backup strategies to recover from potential compromise scenarios.