CVE-2026-46594 in PHP Poll Script
Summary
by MITRE • 07/31/2026
A reflected cross-site scripting (XSS) vulnerability has been identified in the PHP Jabbers - PHP Poll Script. A malicious attacker can craft a specially crafted URL that, when opened, results in arbitrary JavaScript execution in the victim's browser. This issue was fixed in version 4.1.
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Analysis
by VulDB Data Team • 07/31/2026
The reflected cross site scripting vulnerability in PHP Jabbers - PHP Poll Script represents a critical security flaw that enables remote code execution through web browser manipulation. This type of vulnerability falls under CWE-79 which specifically addresses improper neutralization of input during web page generation, creating conditions where attacker-controlled data can be executed as client-side scripts. The vulnerability exists because the application fails to properly sanitize user input parameters before incorporating them into dynamically generated web pages, allowing malicious payloads to be reflected back to users without adequate security controls.
The technical implementation of this flaw occurs when the script processes URL parameters that are directly embedded into HTML output without proper encoding or validation mechanisms. When an attacker crafts a malicious URL containing JavaScript code within poll-related parameters, the vulnerable application reflects this content back to the user's browser without sanitization. This creates an environment where any JavaScript code can be executed in the context of the victim's session, potentially leading to session hijacking, credential theft, or further exploitation of the user's browser environment.
The operational impact of this vulnerability extends beyond simple script execution as it provides attackers with persistent access to user sessions and potential privilege escalation opportunities. According to ATT&CK framework technique T1566, this vulnerability enables initial access through spearphishing with a link, while T1059 covers the execution of malicious code within the victim's browser context. The reflected nature of this XSS means that attackers must convince victims to click on malicious links, but once executed, the payload can harvest cookies, redirect users to malicious sites, or perform actions on behalf of authenticated users.
Mitigation strategies for this vulnerability should include implementing proper input validation and output encoding mechanisms throughout the application codebase. The fix implemented in version 4.1 demonstrates the importance of parameter sanitization where all user inputs are properly escaped before being rendered in web pages. Organizations should implement content security policies, utilize secure coding practices such as using htmlspecialchars() functions in PHP applications, and regularly audit code for input handling vulnerabilities. Additionally, implementing web application firewalls and monitoring for suspicious URL patterns can help detect potential exploitation attempts, while regular security updates ensure protection against known vulnerabilities in third-party components.