CVE-2025-30223
CVE-2025-30223: Beego Cross-Site Scripting (XSS) Vulnerability
Description:
The Beego web framework, versions prior to 2.3.6, contains a Cross-Site Scripting (XSS) vulnerability in the RenderForm() function. This function improperly escapes user-controlled data when generating form markup, allowing attackers to inject malicious JavaScript code into web pages rendered by applications using Beego. Due to RenderForm() being a high-level function, many developers might assume it automatically escapes attributes.
Severity:
- CVSS Score: 9.3 (Critical)
- Impact: Allows for arbitrary JavaScript execution in the victim’s browser. Potential consequences include session hijacking, credential theft, account takeover, and defacement of web pages.
Known Exploit:
An attacker can inject malicious JavaScript code into user-controlled data that is passed to the RenderForm() function. When the function renders the form, the injected script will execute in the user’s browser, granting the attacker control over the user’s session and data. Example: A malicious string entered in a vulnerable form field could contain <script>alert("XSS")</script>.
Remediation / Mitigation Strategy:
Upgrade Beego: The primary remediation is to upgrade the Beego framework to version 2.3.6 or later. This version contains the fix for the improper HTML escaping in the
RenderForm()function.Input Validation and Sanitization: Even after upgrading, implement robust input validation and sanitization on all user-supplied data before it is used in any part of the application, including when passed to form rendering functions. Use appropriate encoding functions (e.g., HTML escaping, URL encoding) to prevent malicious code from being interpreted as executable code by the browser.
Content Security Policy (CSP): Implement a strict Content Security Policy (CSP) to restrict the sources from which the browser is allowed to load resources such as scripts. This can help mitigate the impact of XSS vulnerabilities even if they are not fully remediated.
Web Application Firewall (WAF): Consider deploying a Web Application Firewall (WAF) to detect and block malicious requests, including those containing XSS payloads. WAFs can provide an additional layer of defense against exploitation attempts.
Regular Security Audits: Conduct regular security audits and penetration testing of the application to identify and address any remaining vulnerabilities.
Assigner
- GitHub, Inc. [email protected]
Date
- Published Date: 2025-03-31 16:17:06
- Updated Date: 2025-03-31 17:15:42