EUVD-2026-19217
GHSA-7h2q-r7w3-qfpr
Severity by source
CVSS:4.0/AV:N/AC:L/AT:N/PR:H/UI:P/VC:N/VI:L/VA:N/SC:N/SI:N/SA:N/E:P/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X
Primary rating from NVD · only source for this CVE.
CVSS VectorNVD
Lifecycle Timeline
6DescriptionCVE.org
A security flaw has been discovered in Cyber-III Student-Management-System up to 1a938fa61e9f735078e9b291d2e6215b4942af3f. Affected is an unknown function of the file /admin/Add%20notice/batch-notice.php. Performing a manipulation of the argument $_SERVER['PHP_SELF'] results in cross site scripting. The attack can be initiated remotely. The exploit has been released to the public and may be used for attacks. Continious delivery with rolling releases is used by this product. Therefore, no version details of affected nor updated releases are available. The project was informed of the problem early through an issue report but has not responded yet.
AnalysisAI
Stored cross-site scripting (XSS) in Cyber-III Student-Management-System via manipulation of the $_SERVER['PHP_SELF'] variable in the batch-notice.php admin file allows authenticated attackers with high privileges to inject malicious scripts. The vulnerability affects all versions up to commit 1a938fa61e9f735078e9b291d2e6215b4942af3f, exploitable remotely with user interaction, and publicly available exploit code exists. CVSS score of 4.8 reflects moderate risk constrained by authentication and interaction requirements, though the integrity impact and active public disclosure elevate operational concern.
Technical ContextAI
The vulnerability exploits improper input validation in a PHP application where user-controlled data from the $_SERVER superglobal is reflected in HTML context without sanitization or encoding. The $_SERVER['PHP_SELF'] variable, typically populated from the REQUEST_URI, is manipulated to inject JavaScript payload into the batch-notice.php administrative interface. This is a classic reflected XSS (CWE-79: Improper Neutralization of Input During Web Page Generation) where the PHP_SELF value is directly rendered in page output, likely in form action attributes or informational messages, allowing an attacker to craft a malicious URL that executes script in the victim's browser when visited. Cyber-III Student-Management-System is built on PHP and uses continuous delivery with rolling releases rather than versioned distributions, complicating vulnerability tracking and patch identification.
RemediationAI
Immediate remediation requires updating Cyber-III Student-Management-System to a patched commit after 1a938fa61e9f735078e9b291d2e6215b4942af3f; consult the project's GitHub repository (https://github.com/Cyber-III/Student-Management-System/) for the latest commit or pull any recent changes to obtain the fix. The underlying code fix must properly sanitize and HTML-encode the $_SERVER['PHP_SELF'] variable (or replace it with a hardcoded action path) before rendering in HTML context. Until patching is possible, implement input validation to reject PHP_SELF values containing script tags or suspicious characters, apply output encoding to ensure all dynamic values are HTML-entity-encoded when rendered in HTML attributes or content, and restrict administrative interface access to trusted networks via firewall rules or VPN. Developers should implement Content Security Policy (CSP) headers to mitigate XSS impact.
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External POC / Exploit Code
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