CVE-2026-23861 in Unisphere for PowerMax vApp
Summary
by MITRE • 02/17/2026
Dell Unisphere for PowerMax vApp, version(s) 9.2.4.x, contain(s) an Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting') vulnerability. A low privileged attacker with remote access could potentially exploit this vulnerability, leading to the execution of malicious HTML or JavaScript code in a victim user's web browser in the context of the vulnerable web application. Exploitation may lead to information disclosure, session theft, or client-side request forgery.
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Analysis
by VulDB Data Team • 02/20/2026
The vulnerability identified as CVE-2026-23861 resides within Dell Unisphere for PowerMax vApp version 9.2.4.x, representing a critical cross-site scripting weakness that undermines the security posture of enterprise storage management systems. This particular flaw falls under the CWE-79 category of Improper Neutralization of Input During Web Page Generation, which specifically addresses the failure to properly sanitize user-supplied data before incorporating it into dynamically generated web content. The vulnerability manifests when the application fails to adequately validate and escape input parameters during the web page rendering process, creating an avenue for malicious actors to inject harmful script code into the application's output.
The operational impact of this cross-site scripting vulnerability extends beyond simple aesthetic disruptions to pose significant threats to enterprise security infrastructure. A low-privileged attacker with remote access capabilities can exploit this weakness by crafting malicious input that gets reflected back to victim users through the vulnerable web application interface. When unsuspecting users interact with the compromised page, their browsers execute the injected JavaScript code within the context of the legitimate application, effectively bypassing standard security boundaries. This execution context allows attackers to perform unauthorized actions such as stealing user sessions, accessing sensitive data, or manipulating the application's functionality to conduct client-side request forgery attacks.
The security implications of this vulnerability align with several ATT&CK framework techniques including T1566 for credential access through social engineering and T1071 for application layer protocol usage. The attack surface is particularly concerning given that Dell Unisphere for PowerMax serves as a critical management interface for enterprise storage environments, where compromised sessions could lead to unauthorized access to sensitive storage configurations, data manipulation, or complete system compromise. The vulnerability's classification as a low-privileged attack vector means that even minimal user access could potentially escalate to full administrative control over the storage management platform.
Mitigation strategies for this vulnerability should encompass multiple defensive layers including immediate patch deployment from Dell, input validation and output encoding implementations, and comprehensive web application firewall rules to detect and block malicious script injection attempts. Organizations should implement strict content security policies to prevent unauthorized script execution, conduct regular security assessments of web applications, and establish monitoring protocols to detect anomalous user behavior patterns that might indicate exploitation attempts. Additionally, network segmentation and access control measures should be reinforced to limit potential attack vectors and reduce the overall impact of any successful exploitation attempts. The vulnerability underscores the importance of maintaining current security patches and implementing robust input sanitization practices across all web-based enterprise applications to prevent similar cross-site scripting incidents.