CVE-2025-23995 in Tantyyellow Theme
Summary
by MITRE • 03/31/2025
Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting') vulnerability in ta2g Tantyyellow allows Reflected XSS.This issue affects Tantyyellow: from n/a through 1.0.0.5.
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Analysis
by VulDB Data Team • 03/31/2025
This vulnerability represents a classic cross-site scripting flaw that undermines the security integrity of the ta2g Tantyyellow web application. The weakness stems from inadequate input validation and sanitization during the web page generation process, creating an avenue for malicious actors to inject client-side scripts into web responses. The reflected nature of this vulnerability means that the malicious payload is immediately reflected from the web server back to the user's browser without being stored, making it particularly dangerous for targeted attacks. The affected version range indicates that all versions from the initial release through 1.0.0.5 are susceptible to this particular flaw, suggesting a persistent issue that has not been adequately addressed in the software's development lifecycle.
The technical implementation of this vulnerability violates fundamental web security principles and aligns with CWE-79, which specifically addresses cross-site scripting vulnerabilities in web applications. The flaw occurs when user-supplied input is directly incorporated into dynamically generated web pages without proper sanitization or encoding mechanisms. Attackers can exploit this by crafting malicious URLs containing script tags or other executable code that gets embedded into the application's response, which is then executed by the victim's browser. This reflected XSS vulnerability operates through the standard HTTP request-response cycle where the malicious input travels from the attacker to the web application and back to the victim's browser, bypassing traditional security controls that might otherwise prevent such attacks.
The operational impact of this vulnerability extends beyond simple data theft or session hijacking, as it can enable more sophisticated attack vectors including credential theft, defacement of web content, and redirection to malicious sites. An attacker could potentially leverage this vulnerability to steal user sessions, modify application behavior, or even escalate privileges within the affected system. The reflected nature makes it particularly challenging to defend against through traditional means since the malicious code is not stored on the server but rather injected through user interaction. This vulnerability represents a critical risk to user privacy and application integrity, as it allows unauthorized individuals to manipulate the web application's behavior and potentially compromise the entire user base that interacts with the affected software.
Mitigation strategies should focus on implementing robust input validation and output encoding mechanisms throughout the application's codebase. The most effective approach involves sanitizing all user inputs before they are processed or rendered in web responses, utilizing context-specific encoding techniques such as HTML entity encoding for content displayed in web pages. Organizations should also implement proper Content Security Policy headers to limit the execution of unauthorized scripts and consider implementing web application firewalls to detect and block suspicious input patterns. The vulnerability underscores the importance of following secure coding practices and conducting regular security assessments to identify and remediate similar flaws in web applications. Additionally, developers should refer to the OWASP Top Ten and MITRE ATT&CK framework to understand the specific threat vectors and defensive measures needed to protect against reflected XSS attacks. Regular security updates and patches should be prioritized to address this vulnerability, with proper version control to ensure all installations are protected against the identified flaw.