Platform
php
Component
cve_submit
Fixed in
1.0.1
CVE-2026-3043 describes a cross-site scripting (XSS) vulnerability affecting itsourcecode Event Management System versions 1.0. This flaw allows an attacker to inject malicious scripts into the application, potentially leading to session hijacking or defacement. The vulnerability resides within the /admin/navbar.php file, specifically in an unknown function handling the 'page' argument. A public exploit is already available, increasing the risk of immediate exploitation.
Successful exploitation of CVE-2026-3043 allows an attacker to execute arbitrary JavaScript code within the context of a user's browser session. This can lead to a variety of malicious outcomes, including stealing session cookies, redirecting users to phishing sites, or modifying the content displayed on the Event Management System's administrative interface. Given the administrative nature of the targeted page (/admin/navbar.php), an attacker could potentially gain control over the entire system if they can successfully compromise an administrator's account. The availability of a public exploit significantly lowers the barrier to entry for attackers, making this a high-priority vulnerability to address.
CVE-2026-3043 is a publicly disclosed vulnerability with a readily available exploit. Its relatively low CVSS score (4.3) reflects the requirement for user interaction (an administrator visiting the affected page). However, the existence of a public exploit and the administrative context of the target page elevate the risk. The vulnerability was published on 2026-02-23. No KEV listing or active exploitation campaigns have been confirmed as of this date.
Exploit Status
EPSS
0.03% (9% percentile)
CISA SSVC
CVSS Vector
The primary mitigation for CVE-2026-3043 is to upgrade to a patched version of itsourcecode Event Management System. Since a fixed version is not specified, immediate action is crucial. As an interim measure, implement a Web Application Firewall (WAF) rule to filter out potentially malicious input in the 'page' parameter of the /admin/navbar.php endpoint. Specifically, look for unusual characters or patterns commonly associated with XSS payloads. Additionally, carefully review and sanitize all user-supplied input within the application to prevent future XSS vulnerabilities. After implementing mitigations, thoroughly test the application to ensure that the vulnerability has been effectively addressed and that no new issues have been introduced.
Update to a patched version of the event management system. If a patched version is not available, review and sanitize the 'page' parameter input in the /admin/navbar.php file to prevent XSS code execution.
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CVE-2026-3043 is a cross-site scripting (XSS) vulnerability in itsourcecode Event Management System version 1.0, allowing attackers to inject malicious scripts via the 'page' parameter in /admin/navbar.php.
If you are using itsourcecode Event Management System version 1.0, you are potentially affected by this vulnerability. Upgrade as soon as possible.
Upgrade to a patched version of itsourcecode Event Management System. If a patch is unavailable, implement WAF rules to filter malicious input and sanitize user input.
A public exploit exists, suggesting the potential for active exploitation. Monitor your systems closely and implement mitigations immediately.
Refer to itsourcecode's official website or security advisory channels for the latest information and updates regarding CVE-2026-3043.
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