CVE-2025-50848
MediumCVSS 6.1Exploitation Probability (EPSS)
Low risk12th percentile - higher than 12% of all known CVEs
Summary
A file upload vulnerability in CS Cart 4.18.3 allows unrestricted upload of HTML files, which are rendered directly in the browser. Attackers can upload crafted HTML files containing malicious content, such as fake login forms for credential harvesting or scripts for Cross-Site Scripting (XSS) attacks. Since the content is served from a trusted domain, it significantly increases the likelihood of successful phishing or script execution against other users.
Risk Assessment
The organization is at risk of credential theft and execution of malicious scripts in the context of a trusted domain, potentially leading to account takeover, data leakage, or further attacks within the system.
Recommendation
Immediately update CS Cart to the latest version that fixes this vulnerability. Until the update is applied, block HTML file uploads on the server or configure file type validation mechanisms.
Other vulnerabilities in CS Cart
See all- CVE-2025-50850High
In CS Cart 4.18.3, the vendor login functionality lacks essential security controls such as CAPTCHA verification and rate limiting. This allows an attacker to perform a brute-force attack on vendor accounts by systematically trying username and password combinations. The absence of any blocking mechanism makes the login endpoint susceptible to automated attacks.
- CVE-2025-50847Medium
A Cross Site Request Forgery (CSRF) vulnerability was found in CS Cart 4.18.3. It allows attackers to add products to a user's comparison list via a crafted HTTP request.
- CVE-2025-50849High
CS Cart 4.18.3 is vulnerable to IDOR in the user profile functionality. The company_id parameter allows enabling/disabling stickers without proper server-side validation. An authenticated user can modify this parameter to affect other users' sticker settings.
Original NVD description (English source)
A file upload vulnerability was discovered in CS Cart 4.18.3, allows attackers to execute arbitrary code. CS Cart 4.18.3 allows unrestricted upload of HTML files, which are rendered directly in the browser when accessed. This allows an attacker to upload a crafted HTML file containing malicious content, such as a fake login form for credential harvesting or scripts for Cross-Site Scripting (XSS) attacks. Since the content is served from a trusted domain, it significantly increases the likelihood of successful phishing or script execution against other users.
Vulnerability data from NVD (NIST) · CISA KEV · EPSS