CVE-2023-36236 in Bagisto
Summary
by MITRE • 01/17/2024
Cross Site Scripting vulnerability in webkil Bagisto v.1.5.0 and before allows an attacker to execute arbitrary code via a crafted SVG file uplad.
If you want to get best quality of vulnerability data, you may have to visit VulDB.
Analysis
by VulDB Data Team • 06/17/2025
The vulnerability identified as CVE-2023-36236 represents a critical cross site scripting flaw within the webkil Bagisto e-commerce platform version 1.5.0 and earlier releases. This security weakness specifically manifests during the file upload process, where the application fails to properly validate or sanitize SVG (Scalable Vector Graphics) files submitted by users. The vulnerability stems from insufficient input validation mechanisms that permit maliciously crafted SVG content to bypass security checks, ultimately allowing attackers to inject malicious scripts into the application's web interface.
The technical implementation of this vulnerability falls under the Common Weakness Enumeration category CWE-79, which specifically addresses Cross Site Scripting flaws in web applications. When an attacker uploads a malicious SVG file, the application processes the file without adequate sanitization of potentially dangerous script elements embedded within the SVG markup. This occurs because the platform does not properly implement content type validation, file extension checking, or script removal from SVG files during the upload process. The vulnerability exists in the application's file handling logic where SVG files are accepted without thorough security analysis of their internal content structure.
The operational impact of this vulnerability extends beyond simple script injection, as it can enable attackers to execute arbitrary code within the context of other users' browsers. This capability allows threat actors to perform session hijacking, steal sensitive user data, manipulate application functionality, or redirect users to malicious websites. The attack vector specifically targets the file upload functionality, making it particularly dangerous for e-commerce platforms where users frequently upload product images or other media content. An attacker could craft an SVG file containing embedded javascript that executes when the file is viewed or processed by the web application, potentially compromising the entire user session and the underlying platform infrastructure.
The exploitation of this vulnerability requires minimal technical expertise and can be automated through various attack frameworks. Security researchers have identified that the vulnerability can be leveraged to perform persistent XSS attacks, where malicious scripts remain active within the application until manually removed. The attack surface is particularly broad given that SVG files are commonly used for product images, logos, and other visual elements in e-commerce environments. Organizations using affected versions of Bagisto should immediately implement security patches and consider implementing additional protective measures such as content security policies, file upload restrictions, and enhanced monitoring of user-uploaded content. The vulnerability also highlights the importance of implementing proper input validation and output encoding mechanisms as recommended by the OWASP Top Ten security standards and aligns with ATT&CK technique T1566.001 for initial access through malicious file uploads.
Mitigation strategies should include immediate patching of the affected Bagisto versions, implementation of strict file validation rules that reject SVG files containing executable scripts, and deployment of web application firewalls that can detect and block malicious upload attempts. Organizations should also establish comprehensive monitoring procedures to identify unauthorized file uploads and implement proper access controls to limit user privileges during the upload process. The vulnerability demonstrates the critical need for security-by-design principles in web application development and emphasizes the importance of regular security assessments to identify and remediate similar weaknesses in the application's codebase.