CVE-2026-2943: XSS in SapneshNaik Student Management System
Platform
php
Fixed in
4.0.1
CVE-2026-2943 describes a cross-site scripting (XSS) vulnerability affecting the SapneshNaik Student Management System. This flaw allows attackers to inject malicious scripts into the application, potentially compromising user data and session integrity. The vulnerability exists in versions up to f4b4f0928f0b5551a28ee81ae7e7fe47d9345318, and a public exploit is available, indicating an elevated risk. Due to the lack of versioning, specific mitigation steps are limited to input validation and output encoding.
Impact and Attack Scenarios
Successful exploitation of CVE-2026-2943 enables an attacker to execute arbitrary JavaScript code within the context of a user's browser session. This can lead to various malicious actions, including stealing session cookies, redirecting users to phishing sites, and defacing the application's interface. The attacker could potentially gain access to sensitive student data, such as grades, personal information, and financial details, depending on the application's functionality and data storage practices. Given the availability of a public exploit, the blast radius is significant, potentially impacting all users of the vulnerable Student Management System.
Exploitation Context
CVE-2026-2943 has been publicly disclosed and a proof-of-concept exploit is readily available, indicating a high probability of exploitation. The vulnerability is not currently listed on CISA KEV. The vendor has not responded to early disclosure attempts, which may indicate a lack of responsiveness to security concerns. The availability of a public exploit significantly increases the risk of widespread exploitation.
Threat Intelligence
Exploit Status
EPSS
0.03% (9% percentile)
CISA SSVC
CVSS Vector
What do these metrics mean?
- Attack Vector
- Network — remotely exploitable over the internet. No physical or local access required. Widest attack surface.
- Attack Complexity
- Low — no special conditions required. Attacker can exploit reliably without depending on rare configurations or timing.
- Privileges Required
- None — unauthenticated. No login or credentials needed to exploit.
- User Interaction
- Required — victim must take an action: open a file, click a link, or visit a crafted page.
- Scope
- Unchanged — impact is limited to the vulnerable component itself.
- Confidentiality
- None — no confidentiality impact. Attacker cannot read protected data.
- Integrity
- Low — attacker can modify some data with limited scope or impact.
- Availability
- None — no availability impact. Service remains fully operational.
Affected Software
Weakness Classification (CWE)
Timeline
- Reserved
- Published
- Modified
- EPSS updated
Mitigation and Workarounds
Due to the lack of versioning in the SapneshNaik Student Management System, direct patching is not possible. The primary mitigation strategy involves implementing robust input validation and output encoding techniques. Specifically, carefully sanitize all user-supplied input, particularly the 'Error' argument in index.php, to prevent the injection of malicious scripts. Employ output encoding to ensure that any user-supplied data displayed in the application is properly escaped. Consider implementing a Web Application Firewall (WAF) with XSS protection rules to filter out malicious requests. Regularly review and update the application's codebase to address potential security vulnerabilities.
How to fix
Update the student management system to a patched version or apply the necessary security measures to prevent the execution of unwanted JavaScript code. Validate and sanitize user inputs, especially the 'Error' parameter in the index.php file, to prevent Cross-Site Scripting (XSS) attacks.
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Frequently asked questions
What is CVE-2026-2943 — XSS in SapneshNaik Student Management System?
CVE-2026-2943 is a cross-site scripting (XSS) vulnerability in the SapneshNaik Student Management System allowing attackers to inject malicious scripts. It impacts versions up to f4b4f0928f0b5551a28ee81ae7e7fe47d9345318.
Am I affected by CVE-2026-2943 in SapneshNaik Student Management System?
If you are using the SapneshNaik Student Management System version f4b4f0928f0b5551a28ee81ae7e7fe47d9345318 or earlier, you are potentially affected by this XSS vulnerability.
How do I fix CVE-2026-2943 in SapneshNaik Student Management System?
Due to the lack of versioning, patching is not possible. Mitigate by implementing robust input validation and output encoding techniques, and consider a WAF.
Is CVE-2026-2943 being actively exploited?
A public exploit exists, indicating a high probability of active exploitation and increasing the risk to vulnerable systems.
Where can I find the official SapneshNaik advisory for CVE-2026-2943?
The vendor has not released an official advisory. Refer to the CVE entry for more information: https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2026-2943
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