Platform
php
Component
reservation-management-module
Fixed in
1.0.1
CVE-2026-3819 describes a cross-site scripting (XSS) vulnerability discovered in SourceCodester Resort Reservation System, specifically within the Reservation Management Module. This flaw allows attackers to inject malicious scripts into the application, potentially compromising user sessions and data. The vulnerability affects version 1.0 of the system and has been publicly disclosed.
Successful exploitation of CVE-2026-3819 allows an attacker to execute arbitrary JavaScript code in the context of a victim's browser session. This can lead to various malicious actions, including session hijacking, credential theft, and defacement of the application. An attacker could potentially steal sensitive user data, such as reservation details or personal information. The impact is amplified if the application is used to manage critical resources or handle financial transactions.
This vulnerability has been publicly disclosed, increasing the likelihood of exploitation. While the CVSS score is LOW, the ease of exploitation and potential impact warrant attention. No known active campaigns or proof-of-concept exploits are currently publicly available, but the disclosure makes it a target for opportunistic attackers. The vulnerability was published on 2026-03-09.
Exploit Status
EPSS
0.01% (1% percentile)
CISA SSVC
CVSS Vector
The primary mitigation for CVE-2026-3819 is to upgrade to a patched version of SourceCodester Resort Reservation System. Since a fixed version isn't specified, consider rolling back to a previous, known-stable version if the upgrade causes compatibility issues. Implementing a Web Application Firewall (WAF) with rules to filter out potentially malicious input in the ID parameter of the /?page=manage_reservation endpoint can provide an immediate layer of protection. Input validation and output encoding on the server-side are also crucial preventative measures.
Update the SourceCodester Resort Reservation System to a version later than 1.0, if available, or apply the necessary security measures to prevent the execution of malicious scripts in the reservation management module. Validate and sanitize user input in the ID parameter to prevent XSS attacks.
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CVE-2026-3819 is a cross-site scripting (XSS) vulnerability in SourceCodester Resort Reservation System 1.0, allowing attackers to inject malicious scripts via the /?page=manage_reservation endpoint.
You are affected if you are using SourceCodester Resort Reservation System version 1.0 and have not applied a patch or implemented mitigating controls.
Upgrade to a patched version of SourceCodester Resort Reservation System. If upgrading is not immediately possible, implement WAF rules and input validation as temporary mitigations.
While no active campaigns are confirmed, the public disclosure increases the risk of exploitation by opportunistic attackers.
Refer to the SourceCodester website or relevant security forums for updates and advisories regarding CVE-2026-3819.
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