CVE-2026-54793 Overview
CVE-2026-54793 is a stored Cross-Site Scripting (XSS) vulnerability in Dell OpenManage Enterprise versions prior to 4.7.0. The flaw stems from Improper Neutralization of Input During Web Page Generation [CWE-79]. A low-privileged attacker with remote network access can inject script content that executes in another user's browser session. Successful exploitation requires user interaction and results in information exposure within the OpenManage Enterprise console.
Critical Impact
Attackers with low-privileged access can inject malicious scripts into the OpenManage Enterprise web interface, exposing session data and administrative information when a victim views the affected page.
Affected Products
- Dell OpenManage Enterprise versions prior to 4.7.0
- Dell server management infrastructure integrating OpenManage Enterprise
- Environments using OpenManage Enterprise for PowerEdge lifecycle management
Discovery Timeline
- 2026-08-19 - CVE-2026-54793 published to NVD
- 2026-08-20 - Last updated in NVD database
Technical Details for CVE-2026-54793
Vulnerability Analysis
Dell OpenManage Enterprise fails to properly neutralize user-supplied input before rendering it in generated web pages. The application accepts input through authenticated interfaces and reflects or stores that data without sufficient output encoding. When a victim loads the affected view, the injected payload executes in the context of the OpenManage Enterprise web application.
Exploitation requires an authenticated session with low privileges and interaction from a targeted user. The impact is bounded to confidentiality and integrity within the browser context. Because OpenManage Enterprise manages server hardware fleets, script execution against an administrator session can expose inventory data, session tokens, and configuration details visible in the console.
Root Cause
The root cause is missing or incomplete output encoding in the web page generation logic. The application treats attacker-controlled input as trusted markup when producing HTML responses. This maps directly to [CWE-79] Improper Neutralization of Input During Web Page Generation.
Attack Vector
The attack path requires network access to the OpenManage Enterprise web interface and valid low-privileged credentials. The attacker submits crafted input containing script content through an interface field that stores or reflects the value. When a higher-privileged user navigates to the affected view, the browser executes the payload under the application origin. See the Dell Security Update DSA-2026-359 for vendor-supplied technical detail.
No verified public proof-of-concept code exists for this issue at the time of publication.
Detection Methods for CVE-2026-54793
Indicators of Compromise
- Unexpected <script>, onerror, onload, or javascript: fragments stored in OpenManage Enterprise object fields such as device names, group descriptions, or custom labels
- Web server logs showing POST or PUT requests to OpenManage Enterprise APIs containing HTML entity sequences or encoded script tags
- Anomalous outbound requests from administrator browser sessions to unfamiliar domains shortly after opening OpenManage Enterprise views
Detection Strategies
- Inspect HTTP request bodies to the OpenManage Enterprise management interface for script injection patterns and unusual character encoding
- Correlate authenticated low-privilege user actions with subsequent administrator session anomalies to identify targeted XSS chains
- Review OpenManage Enterprise audit logs for object modifications made by low-privileged accounts to shared or high-visibility resources
Monitoring Recommendations
- Enable detailed HTTP access logging on the OpenManage Enterprise appliance and forward logs to a centralized analytics platform
- Alert on browser-based egress from administrator workstations to domains not on an allowlist
- Track privileged-user session duration and page navigation patterns to surface unexpected activity following interaction with modified objects
How to Mitigate CVE-2026-54793
Immediate Actions Required
- Upgrade Dell OpenManage Enterprise to version 4.7.0 or later using the guidance in Dell Security Update DSA-2026-359
- Audit existing low-privileged accounts and remove unused or stale credentials that could be leveraged to inject payloads
- Review objects created or modified by non-administrative users for embedded script content
Patch Information
Dell has released a fixed build in OpenManage Enterprise 4.7.0. Apply the vendor update following the instructions published in the DSA-2026-359 advisory. Verify the running version through the OpenManage Enterprise console after upgrade.
Workarounds
- Restrict network access to the OpenManage Enterprise web interface to management VLANs and jump hosts only
- Enforce least-privilege role assignments so untrusted users cannot modify objects visible to administrators
- Require administrators to access OpenManage Enterprise from dedicated privileged access workstations with strict browser policies
# Verify installed OpenManage Enterprise version and restrict interface exposure
# 1. Confirm current version from the appliance CLI
omenterprise --version
# 2. Limit inbound access to the management interface (example iptables rule)
iptables -A INPUT -p tcp --dport 443 -s 10.10.20.0/24 -j ACCEPT
iptables -A INPUT -p tcp --dport 443 -j DROP
Disclaimer: This content was generated using AI. While we strive for accuracy, please verify critical information with official sources.
