CVE-2025-24721 is classified as a medium-severity vulnerability due to improper neutralization of input during web page generation, specifically allowing for stored cross-site scripting (XSS) in the Easy YouTube Gallery plugin by Aleksandar Urošević. This vulnerability affects all versions of the plugin up to and including 1.0.4, and was published on January 24, 2025. Organizations using this plugin should be aware of the potential risks associated with this vulnerability.
Risk to organizations includes unauthorized access to sensitive information and the potential for attackers to execute scripts in the context of the user’s browser. Given the nature of XSS, attackers may leverage this vulnerability to perform actions on behalf of users without their consent.
Organizations should prioritize patching immediately. As of now, there are no known exploits and it has not been added to the Known Exploited Vulnerabilities (KEV) catalog, indicating a lower immediate risk of active exploitation. Nevertheless, maintaining security hygiene is crucial.
Organizations are recommended to stay informed about this vulnerability and to apply the necessary updates as soon as they become available.
Vulnerability Details
The vulnerability allows attackers to inject malicious scripts into web pages viewed by other users. Specifically, the XSS vulnerability arises from improper input validation, enabling stored payloads that execute in the context of a victim's session.
The CVSS score for CVE-2025-24721 is 6.5, indicating a medium severity. The attack vector is network-based, and attackers require low privileges and user interaction to exploit this vulnerability. The potential impacts include low confidentiality, integrity, and availability.
Technical Analysis
The root cause of this vulnerability is poor input sanitization in the Easy YouTube Gallery plugin, which fails to neutralize user inputs correctly during web page generation. Attackers can exploit this by crafting a malicious input that gets stored and later served to other unsuspecting users.
The attack vector is through the web application, where attackers can inject their payloads. The complexity of the attack is low, requiring minimal effort to execute. Privileges required are low, as any user can potentially input the malicious data, and user interaction is necessary to trigger the XSS attack.
Risk & Impact Analysis
The risk posed by this vulnerability is significant for organizations utilizing the Easy YouTube Gallery plugin. If exploited, attackers can execute arbitrary scripts in the context of other users, potentially leading to session hijacking, data theft, or further compromise of the web application.
The blast radius could be extensive, especially for websites with a large user base. The urgency for remediation is highlighted by the medium CVSS score, indicating that while immediate exploitation may not be present, the risk still warrants prompt attention.
Exploitation Status
Signal | Status |
|---|---|
Known Exploit | No |
Public PoC | No |
Actively Exploited | No |
Ransomware Use | No |
Affected Versions
All versions prior to vendor patch are affected by this vulnerability, specifically those up to and including version 1.0.4.
Mitigation & Remediation
To mitigate this vulnerability, organizations should upgrade to the patched version of the Easy YouTube Gallery plugin as soon as it is available. If a patch is not yet available, organizations should implement input validation measures to sanitize user inputs, and avoid displaying user-generated content without proper escaping.
Additionally, organizations may consider implementing web application firewalls (WAF) to help filter out malicious requests and monitor user inputs for potential XSS payloads. Regular security audits and penetration testing can also help identify and remediate similar vulnerabilities.
penetration testing services can help validate whether remediation efforts have been effective.
Detection Guidance
Organizations should monitor logs for unusual patterns indicating potential XSS attempts, such as unexpected script tags or encoded payloads in user inputs. Behavioral anomalies, such as unexpected actions from users, should also be investigated.
AppSecure Threat Intelligence Insight
The long-term significance of CVE-2025-24721 revolves around its representation of how improper input validation remains a critical issue in web applications. This vulnerability highlights the need for developers to incorporate secure coding practices and regularly update their knowledge on emerging threats.
Security teams must be vigilant in monitoring for similar vulnerabilities across their applications, as the patterns of exploitation evolve. Lessons learned from this incident emphasize the importance of rigorous testing and validation of user inputs.
Penetration testing methodology should be a cornerstone of security practices to proactively identify and mitigate similar vulnerabilities.
Organizations should also consider the broader implications of XSS vulnerabilities, particularly their potential impact on user trust and organizational reputation.
Vulnerability management programs should be established to systematically address and remediate vulnerabilities while ensuring compliance with security standards.
Disclaimer: This content was generated using AI. While we strive for accuracy, please verify critical information with official sources.
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