CVE-2025-49065 in Visit Counter Plugin
Summary
by MITRE • 08/14/2025
Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting') vulnerability in BestiaDurmiente Visit Counter allows Stored XSS. This issue affects Visit Counter: from n/a through 1.0.
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Analysis
by VulDB Data Team • 06/05/2026
Cross-site scripting vulnerabilities represent one of the most prevalent and dangerous web application security flaws, with the specific weakness identified in BestiaDurmiente Visit Counter exemplifying the serious implications of inadequate input sanitization. This stored cross-site scripting vulnerability occurs when the application fails to properly neutralize user-supplied input during web page generation, allowing malicious scripts to be permanently stored and subsequently executed in the context of other users' browsers. The vulnerability exists within the visit counter functionality where user-provided data is not adequately sanitized before being rendered back to users, creating an attack surface that enables persistent malicious code execution.
The technical flaw manifests when an attacker submits malicious input through the visit counter interface, which gets stored in the application's database or storage mechanism. When other users view pages that display this counter information, the stored malicious script executes in their browsers, potentially stealing session cookies, redirecting to malicious sites, or performing unauthorized actions on behalf of victims. This stored nature of the vulnerability makes it particularly dangerous as the malicious code persists across multiple user sessions and can affect numerous victims without requiring repeated exploitation attempts. The vulnerability affects all versions from the initial release through version 1.0, indicating this was likely a fundamental design flaw in the input handling process rather than a recently introduced issue.
The operational impact of this vulnerability extends beyond simple script execution to encompass significant risks for user privacy and application integrity. Attackers can leverage this weakness to hijack user sessions, steal sensitive information, perform unauthorized transactions, or establish backdoor access to affected systems. The persistent nature of stored XSS means that the attack vector remains active even after the initial compromise, potentially allowing attackers to maintain access over extended periods. Organizations using this visit counter may experience data breaches, user trust erosion, and potential regulatory compliance violations, particularly if user data is compromised through session hijacking or information theft.
Security practitioners should implement comprehensive input validation and output encoding mechanisms to address this vulnerability, following established frameworks such as the CWE-79 category for cross-site scripting flaws. The mitigation strategy should include implementing strict input sanitization routines that remove or escape potentially dangerous characters and patterns, combined with proper output encoding for all dynamic content. Additionally, the application should implement Content Security Policy headers to limit script execution and prevent unauthorized code injection. Organizations should also consider implementing web application firewalls and regular security testing to detect similar vulnerabilities in other components, aligning with ATT&CK framework techniques that target input validation weaknesses and session management flaws. The remediation process must include thorough code review to identify all potential input sources and ensure consistent implementation of security controls throughout the application's architecture.