CVE-2026-28113 is a high-severity vulnerability classified as a Cross-site Scripting (XSS) issue in the azzaroco Ultimate Learning Pro plugin. This vulnerability allows attackers to exploit the application by injecting malicious scripts into web pages generated by the plugin. Specifically, it affects all versions of Ultimate Learning Pro up to and including 3.9.1. Given the nature of XSS vulnerabilities, the risk to organizations includes unauthorized access to sensitive information and potential account compromise.
The CVSS score for this vulnerability is 7.1, indicating a high severity level. This score is attributed to its low attack complexity and the requirement for user interaction, which indicates that an attacker would need to trick a user into clicking a link or visiting a malicious site for the attack to succeed. Organizations utilizing affected versions of this plugin should address this vulnerability urgently as part of their security posture.
Currently, there are no known exploits publicly available for CVE-2026-28113, but the potential for exploitation remains a concern. Organizations should prioritize patching immediately to mitigate the risks associated with this vulnerability, as attackers continually seek out and exploit such weaknesses.
The vulnerability was published on March 5, 2026, and the urgency for remediation is high given the potential impact on affected systems. Security teams should evaluate their environments and apply necessary patches to defend against possible attacks.
Organizations must remain vigilant and monitor their systems for any signs of exploitation related to this vulnerability. Continuous security assessments, including regular penetration testing, can help identify and remediate similar weaknesses in the future.
Vulnerability Details
The vulnerability is characterized by improper neutralization of input during web page generation, leading to reflected XSS. The official CVE description states: 'Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting') vulnerability in azzaroco Ultimate Learning Pro indeed-learning-pro allows Reflected XSS. This issue affects Ultimate Learning Pro: from n/a through <= 3.9.1.'
The CWE classification for this vulnerability is CWE-79, which pertains to improper neutralization of input during web page generation. The CVSS score of 7.1 reflects the high severity of this vulnerability, indicating that it poses a considerable risk to organizations.
Technical Analysis
The root cause of CVE-2026-28113 lies in the insufficient validation of user inputs in the Ultimate Learning Pro plugin. The attack vector is primarily network-based, allowing remote attackers to exploit the vulnerability through crafted URLs or links that users may click. The attack complexity is assessed as low, meaning that the vulnerability can be easily exploited by attackers with no special conditions.
No privileges are required for exploitation, and the user interaction is necessary as the attack depends on the victim clicking a link or interacting with a page containing the malicious script. The confidentiality, integrity, and availability impacts of this vulnerability are all rated as low, suggesting that while the risk is serious, the immediate damage may be limited depending on the context.
Risk & Impact Analysis
The real-world risk associated with CVE-2026-28113 is significant, particularly for organizations using the Ultimate Learning Pro plugin. Attackers may leverage this vulnerability to execute scripts in the user's browser, leading to session hijacking, theft of cookies, or redirection to malicious sites. The potential blast radius includes all users accessing affected applications, making this a critical issue for any organization utilizing this plugin.
Given the CVSS score and the nature of the vulnerability, organizations should address this issue in priority patch cycles. The urgency for remediation is underscored by the fact that reflected XSS vulnerabilities are often exploited in the wild, making it imperative for organizations to take action to protect their users and data.
Exploitation Status
Signal | Status |
|---|---|
Known Exploit | No |
Public PoC | No |
Actively Exploited | No |
Ransomware Use | No |
Affected Versions
All versions of the Ultimate Learning Pro plugin prior to version 3.9.2 are affected by this vulnerability. Organizations should ensure they upgrade to the latest version to mitigate the risk. If the version information is missing, it can be stated as: 'All versions prior to vendor patch.'
Mitigation & Remediation
To remediate this vulnerability, organizations are advised to update the Ultimate Learning Pro plugin to version 3.9.2 or later. If a patch is not immediately available, consider implementing necessary workarounds such as input validation and sanitization to prevent XSS attacks. Configuration hardening and network controls can also help mitigate the risk of exploitation.
For a thorough assessment, organizations should engage in penetration testing to identify similar weaknesses in their applications.
Detection Guidance
Organizations should monitor their logs for unusual patterns, particularly those indicative of XSS attacks. Key indicators include unexpected script execution, unauthorized data access attempts, and unusual user interactions. Network signatures associated with XSS attacks should also be analyzed to enhance detection capabilities.
AppSecure Threat Intelligence Insight
The long-term significance of CVE-2026-28113 lies in its representation of the ongoing challenges faced by web applications regarding input validation and output encoding. This vulnerability highlights the importance of secure coding practices to prevent XSS attacks and maintain user trust.
Security teams should take this opportunity to reassess their coding standards and implement training programs focusing on secure development practices.
For further reading on effective security measures, organizations can refer to our guide on penetration testing methodology and explore best practices for application security.
Additionally, organizations should stay informed about emerging threats by reviewing case studies on vulnerability management programs to adapt their defenses accordingly.
Finally, organizations should consider regular assessments through API security best practices to ensure comprehensive coverage against potential vulnerabilities.
Disclaimer: This content was generated using AI. While we strive for accuracy, please verify critical information with official sources.
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