CVE-2025-30527 identifies a stored Cross-site Scripting (XSS) vulnerability in the codetoolbox My Bootstrap Menu plugin, affecting versions up to and including 1.2.1. The vulnerability stems from improper neutralization of user-supplied input during the generation of web pages, allowing malicious scripts to be embedded and persistently stored within the plugin's output. When a victim accesses a compromised page, the injected script executes in their browser context, potentially enabling attackers to steal cookies, session tokens, or other sensitive information, perform actions on behalf of the user, or redirect users to malicious sites. The vulnerability does not require authentication or special user interaction beyond visiting the affected page, increasing its risk profile. Although no public exploits are currently known, the widespread use of Bootstrap-based menus in web development means many websites could be vulnerable. The lack of an official patch at the time of disclosure necessitates immediate attention to input validation and output encoding practices. Additionally, deploying Content Security Policy (CSP) headers can help mitigate the impact by restricting script execution. The vulnerability was published on March 24, 2025, by Patchstack, with no CVSS score assigned yet.

The stored XSS vulnerability in My Bootstrap Menu can have significant impacts on organizations worldwide. Attackers exploiting this flaw can execute arbitrary JavaScript in the context of affected websites, leading to theft of user credentials, session hijacking, unauthorized actions, and potential malware distribution. This can result in data breaches, loss of user trust, and reputational damage. For e-commerce, financial, or healthcare websites using the vulnerable plugin, the consequences could be severe, including regulatory penalties due to compromised personal data. The ease of exploitation without authentication or user interaction broadens the attack surface, making automated or mass exploitation feasible once exploits become available. Additionally, compromised sites may be used as vectors for further attacks against visitors or internal networks. The absence of a patch increases the window of exposure, emphasizing the urgency for mitigation.

Organizations should immediately audit their web environments to identify installations of the codetoolbox My Bootstrap Menu plugin, specifically versions up to 1.2.1. Until an official patch is released, implement strict input validation and output encoding on all user-supplied data processed by the plugin to prevent malicious script injection. Employ Content Security Policy (CSP) headers to restrict the execution of unauthorized scripts and reduce the impact of potential XSS payloads. Regularly monitor web application logs and user reports for suspicious activity indicative of exploitation attempts. Consider temporarily disabling or replacing the vulnerable plugin with alternative menu solutions that follow secure coding practices. Educate developers and administrators on secure coding standards, particularly regarding input sanitization and output encoding. Once a vendor patch is available, prioritize its deployment in all affected environments. Additionally, conduct penetration testing focused on XSS vulnerabilities to ensure no residual issues remain.