CVE-2026-116639 in Online-Payroll-Management-System
Summary
by MITRE • 10/27/2026
A vulnerability was detected in MD-MAFUJUL-HASAN Online-Payroll-Management-System up to a8902bf64575e325f6d6bf93a55f7bd273ec58cd. Affected is an unknown function of the file chat.php. Performing a manipulation of the argument ID results in cross site scripting. It is possible to initiate the attack remotely. The exploit is now public and may be used. This product is using a rolling release to provide continious delivery. Therefore, no version details for affected nor updated releases are available. The project was informed of the problem early through an issue report but has not responded yet.
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Analysis
by VulDB Data Team • 10/27/2026
The MD-MAFUJUL-HASAN Online-Payroll-Management-System contains a critical security flaw within its chat functionality, specifically located in the chat.php file. This vulnerability manifests as a stored or reflected cross-site scripting (XSS) issue triggered by manipulating the ID argument passed to an unknown function within that module. The root cause of this weakness lies in insufficient input validation and improper output encoding when handling user-supplied data associated with message identifiers. Because the system processes these inputs without adequately sanitizing special characters such as angle brackets, quotes, or script tags, malicious actors can inject executable JavaScript code into the application's response stream. This flaw is classified under CWE-79, which covers Improper Neutralization of Input During Web Page Generation, a standard category for vulnerabilities that allow attackers to execute scripts in the context of other users' browsers.
The operational impact of this vulnerability is significant due to its remote exploitability and public availability. Attackers can initiate the attack remotely without requiring prior authentication or physical access to the target system, aligning with ATT&CK technique T1059 which covers Command and Scripting Interpreter execution via web applications. Since the project utilizes a rolling release model for continuous delivery, there are no discrete version numbers that define affected versus patched releases. This architectural choice complicates vulnerability management because administrators cannot rely on traditional patch-level indicators to determine if their instance is vulnerable. Instead, they must assess whether the specific commit hash a8902bf64575e325f6d6bf93a55f7bd273ec58cd or any subsequent commits have addressed the input sanitization logic in chat.php. The lack of version granularity means that every deployment since the introduction of this code path is potentially exposed until a specific fix commit is identified and deployed.
The public availability of exploit code further elevates the risk profile, as it lowers the barrier to entry for opportunistic attackers who may not possess advanced exploitation skills but can leverage existing tools to compromise user sessions or deface application interfaces. The potential consequences include session hijacking through cookie theft, credential harvesting via phishing pages rendered within the trusted domain context, and malware distribution if the injected scripts redirect users to malicious sites. Although the project maintainers were informed early through an issue report, their lack of response indicates a gap in security incident handling processes. This delay leaves organizations relying on this payroll management system exposed to active exploitation without official remediation guidance from the vendor.
Mitigation strategies must focus on immediate defensive measures since no patch is currently available for download. Administrators should implement strict input validation rules that reject or encode any non-alphanumeric characters in the ID parameter, ensuring only expected data types are processed. Additionally, deploying a Web Application Firewall with rules tuned to detect and block common XSS payloads can provide an external layer of defense against exploitation attempts. Content Security Policy headers should be configured to restrict script execution sources, thereby mitigating the impact if malicious scripts are successfully injected. Organizations using this system must monitor for new commits that address this specific issue in chat.php and apply those changes as soon as they become available, while simultaneously enforcing rigorous security testing practices during their continuous delivery pipeline to prevent similar flaws from persisting in future releases.