{"id":74175,"date":"2025-09-11T16:46:19","date_gmt":"2025-09-11T16:46:19","guid":{"rendered":""},"modified":"2025-10-16T05:54:16","modified_gmt":"2025-10-16T11:54:16","slug":"cve-2025-58361-xss-vulnerability-in-promptcraft-forge-studio-via-non-exhaustive-url-scheme-check","status":"publish","type":"post","link":"https:\/\/www.ameeba.com\/blog\/cve-2025-58361-xss-vulnerability-in-promptcraft-forge-studio-via-non-exhaustive-url-scheme-check\/","title":{"rendered":"CVE-2025-58361: XSS Vulnerability in Promptcraft Forge Studio via Non-Exhaustive URL Scheme Check<\/strong>"},"content":{"rendered":"

Overview<\/strong><\/p>\n

This blog post explores a significant vulnerability discovered in Promptcraft Forge Studio, an essential tool for developing and maintaining LLM-powered applications. The vulnerability, identified as CVE-2025-58361, affects all versions of the software, potentially placing a wide range of systems and their data at risk. This vulnerability is particularly concerning because it allows attackers to bypass security measures using user-controlled URLs<\/a> to execute arbitrary scripts, leading to system compromise or data leakage.<\/p>\n

Vulnerability Summary<\/strong><\/p>\n

CVE ID: CVE-2025-58361
\nSeverity: Critical (9.3\/10)
\nAttack Vector: Web-based (XSS)
\nPrivileges Required: None
\nUser Interaction: Required
\nImpact: System compromise<\/a> or data leakage<\/p>\n

Affected Products<\/strong><\/p>\n

Product | Affected Versions<\/p>\n

Promptcraft Forge Studio<\/a> | All versions<\/p>\n

How the Exploit Works<\/strong><\/p>\n

The exploit leverages a weakness in Promptcraft Forge Studio’s URL scheme check mechanism<\/a>. This mechanism, located in src\/utils\/validation.ts, only strips ‘javascript:’ and a few patterns, while `data:` URLs (such as data:image\/svg+xml,\u2026) are allowed to pass. This oversight allows an attacker to inject<\/a> malicious scripts via these unchecked `data:` URLs. When these manipulated URLs are used in href\/src, the attacker’s script gets executed, compromising the system<\/a>.<\/p>\n

Conceptual Example Code<\/strong><\/p>\n

Below is a conceptual example of how the vulnerability might be exploited:<\/p>\n

GET \/vulnerableSite\/?url=data:text\/html;base64,PHNjcmlwdD5hbGVydCgnWFNTJyk8L3NjcmlwdD4= HTTP\/1.1\nHost: target.example.com<\/code><\/pre>\n
In this example, the GET request includes a `data:` URL that contains a Base64-encoded script (`<script>alert(‘XSS’)<\/script>`). If this request is processed by a system with the described vulnerability<\/a>, the script will be executed. This action can lead to unauthorized<\/a> access, data leakage, or even full system compromise.<\/p>\n
Mitigation Guidance<\/strong><\/p>\n
As of now, there is no official fix for this issue. Until a patch is released by the vendor, it is advisable to use a Web Application Firewall (WAF) or an Intrusion Detection System (IDS) as temporary mitigation. These tools can help identify and block attempts to exploit this vulnerability<\/a>. Organizations are also advised to regularly update their systems and applications to the latest versions and maintain good cybersecurity<\/a> hygiene to reduce the risk of successful attacks.<\/p>\n","protected":false},"excerpt":{"rendered":"
Overview This blog post explores a significant vulnerability discovered in Promptcraft Forge Studio, an essential tool for developing and maintaining LLM-powered applications. The vulnerability, identified as CVE-2025-58361, affects all versions of the software, potentially placing a wide range of systems and their data at risk. This vulnerability is particularly concerning because it allows attackers to […]<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"om_disable_all_campaigns":false,"_monsterinsights_skip_tracking":false,"footnotes":""},"categories":[1],"tags":[],"vendor":[],"product":[],"attack_vector":[81],"asset_type":[],"severity":[],"exploit_status":[],"class_list":["post-74175","post","type-post","status-publish","format-standard","hentry","category-uncategorized","attack_vector-xss"],"aioseo_notices":[],"aioseo_head":"\n\t\t\n\t\n\t\n\t\n\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t