CVE-2025-26775 in Bear Plugin
Summary
by MITRE • 02/17/2025
Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting') vulnerability in RealMag777 BEAR allows Stored XSS. This issue affects BEAR: from n/a through 1.1.4.4.
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Analysis
by VulDB Data Team • 03/20/2025
The vulnerability identified as CVE-2025-26775 represents a critical cross-site scripting flaw within the RealMag777 BEAR application, specifically classified as a stored XSS vulnerability according to the CWE-79 framework. This weakness occurs during the web page generation process where input data fails to be properly sanitized or neutralized before being rendered in the user interface. The vulnerability exists in BEAR versions ranging from the initial release through 1.1.4.4, indicating a broad impact across multiple iterations of the software. The stored nature of this vulnerability means that malicious input injected by an attacker is permanently saved within the application's database or storage mechanisms, making it persistently dangerous and automatically executed whenever the affected page is loaded by any user.
The technical implementation of this flaw allows an attacker to inject malicious scripts into the web application through user input fields that are then stored and subsequently executed in the context of other users' browsers. This typically occurs when the application fails to properly validate or escape user-supplied data before incorporating it into dynamically generated web content. The vulnerability's impact extends beyond simple script execution as it provides attackers with the ability to hijack user sessions, steal sensitive information, manipulate data, or redirect users to malicious websites. From an operational perspective, this vulnerability creates a persistent threat vector that can compromise multiple users without requiring repeated exploitation attempts, as the malicious payload remains embedded within the application's data stores.
The security implications of this stored XSS vulnerability align with ATT&CK technique T1531 which focuses on credential access through malicious code execution. Attackers can leverage this vulnerability to execute malicious scripts that harvest cookies, session tokens, or other sensitive data from users' browsers. The affected BEAR application version range suggests that organizations using these versions face immediate risk, as the vulnerability allows for persistent code injection that can be exploited by attackers with minimal technical expertise. The lack of input sanitization during web page generation creates an environment where malicious payloads can be seamlessly integrated into legitimate application functionality, making detection more challenging for security monitoring systems.
Organizations utilizing RealMag777 BEAR versions within the affected range must implement immediate mitigations to address this vulnerability. The primary remediation involves implementing comprehensive input validation and output encoding mechanisms throughout the application's data handling processes. This includes sanitizing all user-provided input before storage and properly escaping data during web page generation to prevent script execution. Additionally, organizations should deploy web application firewalls and implement Content Security Policies to add additional layers of protection against XSS attacks. Regular security assessments and code reviews should be conducted to identify similar vulnerabilities in other application components, ensuring that the remediation efforts extend beyond this specific issue to strengthen overall application security posture. The vulnerability's classification as a stored XSS makes it particularly dangerous as it can remain active for extended periods without detection, emphasizing the importance of immediate patching or workaround implementation.