CVE-2026-50758 in next-ai-draw-io
Summary
by MITRE • 07/21/2026
Cross Site Scripting vulnerability in DayuanJiang next-ai-draw-io 0.4.13 allows a remote attacker to execute arbitrary code via the mcp parameter
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Analysis
by VulDB Data Team • 07/21/2026
This cross site scripting vulnerability exists within the DayuanJiang next-ai-draw-io plugin version 0.4.13, representing a critical security flaw that enables remote code execution through improper input validation. The vulnerability specifically manifests when the application fails to adequately sanitize the mcp parameter, allowing malicious actors to inject arbitrary script code that executes in the context of the victim's browser. This type of weakness falls under the CWE-79 category of Cross-Site Scripting, which is classified as a common web application vulnerability that occurs when user input is improperly validated or escaped before being rendered in web pages. The ATT&CK framework categorizes this as a code injection technique under the T1566 initial access vector, where adversaries leverage web application vulnerabilities to execute malicious code remotely.
The technical exploitation of this vulnerability occurs when an attacker crafts a malicious payload containing script code within the mcp parameter and delivers it to unsuspecting users through various means such as phishing emails, compromised websites, or social engineering campaigns. When the vulnerable application processes this input without proper sanitization, the injected scripts execute in the victim's browser context, potentially leading to session hijacking, data theft, or further compromise of the affected system. The impact extends beyond simple script execution as the vulnerability creates a persistent threat vector that can be leveraged for more sophisticated attacks including credential harvesting and privilege escalation.
The operational consequences of this vulnerability are severe as it provides attackers with a direct pathway to compromise user sessions and potentially gain unauthorized access to sensitive information within the application environment. Organizations utilizing this plugin version face significant risk exposure, particularly in environments where users may encounter untrusted content or where the application handles sensitive data. The vulnerability's remote nature means that attackers do not require physical access to the system or local network presence to exploit it, making it particularly dangerous for widespread deployment scenarios. Security teams must consider the potential for cascading effects if this vulnerability is used as a foothold for further attacks within compromised networks.
Mitigation strategies should focus on immediate patching of the affected plugin version to address the input validation deficiencies that enable the XSS attack vector. Organizations should implement comprehensive input sanitization and output encoding mechanisms to prevent script injection attempts, while also deploying web application firewalls to detect and block malicious payloads targeting this vulnerability. The implementation of content security policies can provide additional protection layers by restricting the sources from which scripts can be executed within the browser context. Regular security assessments and penetration testing should be conducted to identify similar vulnerabilities in other applications and components, as the underlying weakness represents a common pattern that may exist elsewhere in the system architecture. Additionally, user education and awareness programs should emphasize the importance of avoiding suspicious links and content that may contain malicious payloads designed to exploit such vulnerabilities.