CVE-2001-1516 in phpReview
Summary
by MITRE
Cross-site scripting (XSS) vulnerability in phpReview 0.9.0 rc2 and earlier allows remote attackers to inject arbitrary web script or HTML via user-submitted reviews.
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Analysis
by VulDB Data Team • 09/24/2025
The vulnerability identified as CVE-2001-1516 represents a critical cross-site scripting flaw discovered in phpReview version 0.9.0 rc2 and earlier iterations. This security weakness resides within the web application's handling of user-generated content, specifically in the review submission functionality that processes and displays user reviews on the website. The vulnerability stems from inadequate input validation and output encoding mechanisms that fail to properly sanitize data before rendering it in web pages. Attackers can exploit this flaw by submitting malicious scripts or HTML code within review content, which then gets executed in the browsers of other users who view these reviews. This type of vulnerability directly violates the fundamental security principle of input sanitization and demonstrates a failure in the application's defense-in-depth strategy.
The technical implementation of this XSS vulnerability occurs when the phpReview application accepts user reviews without properly encoding special characters or validating the content against known malicious patterns. The flaw allows attackers to inject javascript code or other malicious scripts that execute in the context of the victim's browser session. This creates a persistent threat where every user who views the compromised reviews becomes a potential victim of the injected code. The vulnerability operates at the application layer and can be exploited through various vectors including stored XSS attacks where malicious code is permanently stored on the server and executed whenever users access the affected pages. According to CWE classification, this represents a CWE-79: Improper Neutralization of Input During Web Page Generation, which is a core category for web application security vulnerabilities.
The operational impact of this vulnerability extends beyond simple data theft or defacement, as it enables attackers to perform session hijacking, redirect users to malicious websites, or execute arbitrary commands on behalf of authenticated users. The threat landscape for such vulnerabilities aligns with ATT&CK technique T1566.001 for Phishing and T1059.007 for Command and Scripting Interpreter, as attackers can leverage this weakness to establish persistent access or conduct more sophisticated attacks. The vulnerability affects the confidentiality, integrity, and availability of the web application by allowing unauthorized code execution and potentially enabling privilege escalation attacks. Organizations running affected versions of phpReview face significant risk of data compromise, reputation damage, and potential regulatory violations due to the exposure of user data and the potential for further exploitation.
Mitigation strategies for CVE-2001-1516 should include immediate patching of the phpReview application to version 0.9.0 rc3 or later, which contains the necessary fixes for input validation and output encoding. Additionally, administrators should implement proper input sanitization routines that filter or encode special characters in user-submitted content before storage or display. The implementation of Content Security Policy headers and proper output encoding techniques such as HTML entity encoding can provide additional defense layers. Regular security assessments and input validation testing should be conducted to prevent similar vulnerabilities from emerging in other application components. Organizations should also consider implementing web application firewalls and monitoring systems to detect and prevent exploitation attempts. The remediation process should include comprehensive testing to ensure that the patch does not introduce regressions in application functionality while maintaining the security hardening measures.