CVE-2026-77681 in Online Job Portal
Summary
by MITRE • 08/21/2026
A vulnerability was identified in CodeAstro Online Job Portal 1.0. Affected by this vulnerability is an unknown functionality of the file /users/update-profile.php. The manipulation of the argument Name leads to unrestricted upload. The attack can be initiated remotely. The exploit is publicly available and might be used.
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Analysis
by VulDB Data Team • 08/21/2026
The identified security flaw resides within CodeAstro Online Job Portal version 1.0, specifically targeting the user profile management functionality exposed through the /users/update-profile.php endpoint. This vulnerability represents a critical failure in input validation and file handling mechanisms, allowing an attacker to bypass intended restrictions on file uploads. The root cause lies in the improper sanitization of the Name argument provided by the client during the profile update process. Instead of validating or restricting the content based on expected data types such as alphanumeric strings for names, the application processes this input in a manner that inadvertently facilitates unrestricted file upload capabilities. This misconfiguration suggests that the backend logic may be concatenating user-supplied input with file paths or using it to determine file metadata without adequate verification against a whitelist of allowed extensions or content types.
From a technical perspective, this vulnerability aligns closely with CWE-434, which describes the unrestricted upload of files with dangerous content. By manipulating the Name parameter, an attacker can inject malicious payloads disguised as legitimate profile data. The lack of rigorous server-side validation allows these payloads to be stored on the web server without restriction. This is a severe deviation from secure coding practices mandated by standards such as OWASP Top 10, specifically under categories related to insecure direct object references and broken access control. The vulnerability exploits the trust placed in user-supplied data within dynamic web applications that handle file operations. Because the exploit relies on manipulating HTTP request parameters sent over standard protocols, it is inherently remote exploitable, requiring no prior authentication or physical access to the target system infrastructure.
The operational impact of this vulnerability is significant and potentially catastrophic for organizations deploying CodeAstro Online Job Portal 1.0. An attacker who successfully exploits this flaw can upload arbitrary files, including web shells, malware, or scripts designed to execute commands on the server. This capability effectively grants the attacker remote code execution privileges under the context of the web application process. Once a malicious file is uploaded and executed, it serves as a foothold for further lateral movement within the network, data exfiltration, defacement, or denial of service attacks. The availability of public exploits amplifies this risk significantly, as automated scanning tools and opportunistic attackers can leverage these scripts to compromise vulnerable instances rapidly without needing specialized knowledge or custom development efforts. This lowers the barrier to entry for malicious actors, increasing the likelihood of successful exploitation in real-world scenarios.
Mitigation strategies must focus on implementing robust input validation and secure file handling procedures immediately. Developers should enforce strict whitelisting for allowed file extensions rather than relying on blacklist approaches which are prone to bypasses using alternate extensions or MIME type spoofing. Additionally, server-side validation must be implemented to verify the actual content of uploaded files against their claimed types, ensuring that no executable code is stored in directories accessible via HTTP. It is also critical to store user-uploaded files outside of the web root directory and serve them through a controlled script if access is required, thereby preventing direct execution. For administrators currently running this version, immediate patching or upgrading to a secure version provided by the vendor is essential. In cases where updates are not immediately available, implementing Web Application Firewall rules that detect and block anomalous file upload patterns associated with this specific endpoint can provide temporary protection against exploitation until a permanent fix is deployed.