DNN (formerly DotNetNuke) is an open-source web content management platform (CMS) in the Microsoft ecosystem. A medium-severity vulnerability, identified as CVE-2026-24784, allows a content editor to inject scripts in module headers and footers that will execute for other users. This vulnerability affects versions 9.0.0 through 9.13.9 and 10.0.0 through 10.1.9, with versions 9.13.10 and 10.2.0 providing the necessary fix.
The CVSS score for this vulnerability is 6.8, indicating a medium severity level that requires organizations to prioritize remediation. The risk to organizations includes unauthorized script execution that could compromise user data and integrity.
Currently, there are no confirmed public exploits available for this vulnerability, but it is crucial for organizations using affected versions to apply the patches provided in later releases to mitigate potential risks.
Organizations should prioritize patching immediately. This vulnerability highlights the significance of maintaining updated software versions in order to safeguard web applications from potential threats.
Vulnerability Details
The vulnerability allows content editors to inject malicious scripts in module headers and footers, impacting all users who access those modules. Affected versions include DNN versions from 9.0.0 to 9.13.9 and from 10.0.0 to 10.1.9. The vulnerability is classified under CWE-79 (Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')).
The CVSS score of 6.8 indicates a medium severity risk level, with a base score calculated based on the attack vector being network-based, low attack complexity, high privileges required, and no user interaction needed.
Technical Analysis
The root cause of this vulnerability stems from inadequate input validation, allowing script injection into module headers and footers. The attack vector is primarily network-based, enabling an attacker to exploit the vulnerability remotely. The attack complexity is low, with high privileges required to perform the injection, and no user interaction is necessary.
In terms of impacts, the confidentiality impact is high as attackers can execute scripts that may capture sensitive user information. However, the integrity and availability impacts are minimal, as no data alteration or downtime is directly associated with this vulnerability.
Risk & Impact Analysis
The real-world deployment risk of this vulnerability is significant due to the potential for unauthorized script execution, which can lead to severe data breaches. Organizations that utilize DNN for their web content management should be aware of the risks associated with this vulnerability, particularly regarding user trust and data protection.
Given the CVSS score of 6.8, organizations are advised to address this vulnerability in their priority patch cycle. The blast radius is relatively high, affecting any user who interacts with the compromised modules, which could lead to widespread exploitation.
Exploitation Status
Signal | Status |
|---|---|
Known Exploit | No |
Public PoC | No |
Actively Exploited | No |
Ransomware Use | No |
Affected Versions
The affected versions of DNN are those starting from 9.0.0 and prior to 9.13.10, as well as from 10.0.0 to prior to 10.2.0. Organizations using these versions should implement the available patches.
Mitigation & Remediation
Organizations should ensure they upgrade to versions 9.13.10 or 10.2.0, which contain fixes for the identified vulnerability. In cases where immediate patching is not feasible, consider implementing configuration hardening to reduce risk exposure.
Regular security testing should be conducted to identify any similar vulnerabilities. For more information on security testing strategies, organizations may refer to the penetration testing services offered by AppSecure.
Detection Guidance
To detect potential attempts to exploit this vulnerability, organizations should monitor logs for unusual script execution patterns and user interactions. Behavioral anomalies in module interactions may indicate exploitation attempts. Implementing network signatures that can identify the injection of scripts can also enhance detection capabilities.
AppSecure Threat Intelligence Insight
CVE-2026-24784 represents a notable trend in web application vulnerabilities, particularly concerning input validation failures. As organizations increasingly rely on web content management systems, the potential for similar vulnerabilities will remain a concern.
Security teams should prioritize regular updates and thorough security assessments as part of their application security programs. For more insights into effective security practices, consider reviewing our guide on penetration testing methodology and the importance of vulnerability management in maintaining secure environments.
Finally, organizations should look to the future of application security by understanding the evolving threat landscape, which can be explored in our article on vulnerability management programs to strengthen their defenses.
Disclaimer: This content was generated using AI. While we strive for accuracy, please verify critical information with official sources.
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