CVE-2026-63281 in Advanced Module Manager Plugin
Summary
by MITRE • 07/23/2026
Stored condition values could also execute HTML/JavaScript in administrator summaries.
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Analysis
by VulDB Data Team • 07/23/2026
This vulnerability represents a classic cross-site scripting flaw that occurs when user-supplied data containing malicious script code is stored in a system and subsequently displayed in administrative interfaces without proper sanitization or encoding. The issue manifests when condition values entered by users are persisted in the system and later rendered in administrator summary pages, creating an environment where attackers can inject HTML and JavaScript payloads that execute within the context of privileged administrator sessions. This type of vulnerability falls under the CWE-79 category of Cross-Site Scripting, specifically representing a stored XSS attack vector that allows persistent malicious code execution.
The technical implementation of this flaw typically involves the application accepting user input through forms or API endpoints where condition values are submitted and stored in databases or configuration files. When administrators view summary reports or dashboards containing these stored values, the malicious scripts execute automatically within their browser context, potentially enabling attackers to steal session cookies, perform actions on behalf of administrators, or escalate privileges. The vulnerability is particularly dangerous because it does not require user interaction beyond initial payload injection since the malicious code executes automatically when administrators access affected pages.
From an operational perspective, this vulnerability creates a significant risk for organizations as it allows attackers to compromise administrative accounts and gain elevated privileges within the system. The impact extends beyond simple data theft to include potential complete system takeover, unauthorized configuration changes, and data manipulation. Attackers can leverage this vulnerability to establish persistent backdoors, exfiltrate sensitive information, or disrupt business operations through destructive actions performed with administrative privileges. The attack vector aligns with ATT&CK technique T1059.007 for Command and Scripting Interpreter, specifically targeting JavaScript execution within web browsers.
Mitigation strategies should focus on implementing comprehensive input validation and output encoding mechanisms throughout the application lifecycle. All user-supplied data must be properly sanitized before storage and encoded appropriately when rendered in administrative interfaces. Implementing Content Security Policy headers can provide additional protection against script execution, while regular security testing including automated scanning and manual penetration testing helps identify similar vulnerabilities. Organizations should also consider implementing proper access controls and privilege separation to limit the impact of potential compromises. The remediation aligns with OWASP Top Ten security controls for input validation and output encoding, ensuring that all dynamic content is properly escaped before display in administrative contexts.