CVE-2026-44924: InfoScale VIOM 9.1.3 XSS Vulnerability

CVE-2026-44924 Overview

CVE-2026-44924 is a cross-site scripting (XSS) vulnerability affecting Veritas InfoScale Operations Manager (VIOM) version 9.1.3. The flaw is classified under [CWE-79], improper neutralization of input during web page generation. An authenticated attacker can inject malicious script content into the VIOM web application, which then executes in the browser context of a victim user who interacts with the crafted content.

Critical Impact
Successful exploitation allows attackers to execute arbitrary JavaScript in a victim's browser, potentially hijacking sessions, stealing tokens, or performing actions against the InfoScale management interface as the targeted user.

Affected Products

Veritas InfoScale Operations Manager (VIOM) 9.1.3
InfoScale Operations Manager IOM web application
Related InfoScale 9.x deployments using the VIOM management console

Discovery Timeline

2026-05-20 - CVE-2026-44924 published to NVD
2026-05-20 - Last updated in NVD database

Technical Details for CVE-2026-44924

Vulnerability Analysis

The vulnerability resides in the InfoScale Operations Manager web application, which handles user-supplied input within its administrative interface. The application fails to properly neutralize special characters before rendering input back into HTML responses. This allows an attacker with low privileges to embed script payloads that execute when another user loads the affected page.

The issue carries a changed scope, meaning the injected script executes within a security context different from the vulnerable component. This expands the impact to other resources accessible from the victim's browser session. Confidentiality and integrity impacts are limited, and the flaw does not directly affect availability.

Exploitation requires user interaction, typically by tricking a privileged operator into viewing a page containing the stored or reflected payload. Given that VIOM is used to manage clustered storage and availability infrastructure, compromise of administrator sessions can cascade into broader operational risk.

Root Cause

The root cause is missing or insufficient output encoding on user-controlled fields within the VIOM web application. Input that should be treated as data is rendered as executable markup, satisfying the conditions of [CWE-79]. The application's templating or response generation logic does not consistently apply contextual escaping for HTML, attribute, or JavaScript output sinks.

Attack Vector

The attack vector is network-based and requires an authenticated user with low privileges to submit malicious input. A second user must then load the affected view for the payload to execute. Typical payloads target session cookies, anti-CSRF tokens, or perform unauthorized actions through the victim's authenticated session against the InfoScale management plane.

No verified proof-of-concept code is available. Refer to the InfoScale Security Bulletin for CVEs for vendor technical details.

Detection Methods for CVE-2026-44924

Indicators of Compromise

Unexpected <script>, onerror=, or javascript: strings in VIOM database records or audit logs tied to user-submitted fields.
Outbound HTTP requests from administrator browsers to attacker-controlled domains shortly after loading VIOM pages.
Anomalous session token reuse from IP addresses that differ from the legitimate administrator's origin.

Detection Strategies

Inspect VIOM web access logs for request parameters containing HTML or JavaScript metacharacters such as <, >, ", and script.
Deploy a web application firewall (WAF) rule set to flag XSS payload signatures targeting the VIOM management endpoints.
Correlate administrator authentication events with subsequent unusual administrative actions to identify session abuse.

Monitoring Recommendations

Enable verbose audit logging on the InfoScale Operations Manager web tier and forward logs to a central SIEM.
Monitor browser security telemetry from endpoints used to administer VIOM for script execution anomalies.
Alert on configuration changes to VIOM that occur outside scheduled change windows.

How to Mitigate CVE-2026-44924

Immediate Actions Required

Apply the vendor-supplied fixes referenced in the InfoScale Security Bulletin for InfoScale Operations Manager 9.1.3.
Restrict access to the VIOM web console to trusted management networks and authenticated administrators only.
Rotate administrator session tokens and credentials if exposure is suspected.

Patch Information

Consult the Veritas Support Document and the InfoScale Security Bulletin covering CVE-2026-44923, CVE-2026-44924, and CVE-2026-44925 for the fixed build information and upgrade procedures. Apply the recommended hotfix or update for VIOM 9.1.3 as soon as testing permits.

Workarounds

Place the VIOM web application behind a reverse proxy or WAF that enforces strict input filtering and Content Security Policy (CSP) headers.
Limit VIOM accounts to the minimum required privileges and disable unused user accounts to reduce the pool of potential attackers.
Train administrators to avoid clicking untrusted links or rendering untrusted content while authenticated to the VIOM console.

bash

# Example NGINX reverse proxy hardening for VIOM
add_header Content-Security-Policy "default-src 'self'; script-src 'self'; object-src 'none'; frame-ancestors 'none'" always;
add_header X-Content-Type-Options "nosniff" always;
add_header X-Frame-Options "DENY" always;
add_header Referrer-Policy "no-referrer" always;