CVE-2024-30054: Microsoft Power BI JavaScript SDK Info Leak

CVE-2024-30054 Overview

CVE-2024-30054 is an information disclosure vulnerability in the Microsoft Power BI Client JavaScript SDK (powerbi-javascript). The flaw allows a network-based attacker to access sensitive information rendered or handled by embedded Power BI content when a targeted user interacts with attacker-supplied input. Microsoft classifies the issue under CWE-20: Improper Input Validation. Exploitation requires user interaction but no privileges or authentication on the target system. The vulnerability affects web applications that embed Power BI reports, dashboards, or tiles using the client-side SDK.

Critical Impact
Successful exploitation exposes confidential Power BI data to unauthorized network attackers when a user interacts with a crafted request.

Affected Products

Microsoft Power BI Client JavaScript SDK (powerbi-javascript)
Web applications embedding Power BI content via the JavaScript SDK
Downstream applications shipping vulnerable versions of the SDK

Discovery Timeline

2024-05-14 - CVE-2024-30054 published to NVD
2026-06-17 - Last updated in NVD database

Technical Details for CVE-2024-30054

Vulnerability Analysis

The vulnerability resides in the powerbi-javascript client SDK used to embed Power BI content in web applications. Microsoft categorizes the root cause as improper input validation [CWE-20]. An attacker sends a crafted request or payload that the SDK processes without proper sanitization. When a user interacts with the malicious content, sensitive data handled by the embedded Power BI component becomes accessible to the attacker. The impact is limited to confidentiality; integrity and availability of the underlying Power BI service are not affected. The attack occurs over the network and requires the victim to perform an action, such as clicking a link or loading a page containing the malicious payload.

Root Cause

The SDK fails to sufficiently validate input handled by client-side embedding functions. This gap allows an attacker to influence how the SDK processes data flowing between the hosting web application and the Power BI service. Microsoft has not published detailed technical internals for this issue. See the Microsoft Security Update Guide entry for CVE-2024-30054 for vendor-authoritative details.

Attack Vector

Exploitation is remote over the network and requires user interaction. An attacker crafts a malicious link, page, or payload that targets a web application embedding Power BI content. When the victim opens the attacker-controlled resource, the vulnerable SDK processes the input and discloses information intended to remain confidential within the embedding context. No prior authentication to the target application is required for the attacker.

No public proof-of-concept exploit is available for CVE-2024-30054. Refer to the Microsoft Security Update Guide for authoritative remediation guidance.

Detection Methods for CVE-2024-30054

Indicators of Compromise

Web server or application logs showing unusual referrers or query parameters directed at pages embedding Power BI content.
Client-side error telemetry from powerbi-javascript indicating unexpected input handling or malformed messages.
Outbound requests from user browsers to unfamiliar domains immediately after loading embedded Power BI pages.

Detection Strategies

Inventory all web applications and portals that embed Power BI content and identify the version of powerbi-javascript in use.
Monitor Content Security Policy (CSP) violation reports on pages embedding Power BI for unexpected script sources or postMessage origins.
Review Power BI audit logs for anomalous report or dataset access patterns tied to embedded viewer sessions.

Monitoring Recommendations

Ingest browser telemetry, web server logs, and Power BI activity logs into a centralized analytics platform for correlation.
Alert on repeated user interactions with external links that redirect to internal Power BI embed pages.
Track SDK version deployment across development, staging, and production environments to confirm patch coverage.

How to Mitigate CVE-2024-30054

Immediate Actions Required

Upgrade powerbi-javascript to the fixed version referenced in the Microsoft Security Update Guide.
Audit all internal and customer-facing applications embedding Power BI to confirm they consume the patched SDK.
Rebuild and redeploy front-end bundles that statically include the vulnerable SDK version.

Patch Information

Microsoft addressed CVE-2024-30054 in an updated release of the Power BI Client JavaScript SDK. Consult the Microsoft Security Update Guide entry for CVE-2024-30054 for the fixed version number and update instructions. Update the SDK dependency in package manifests (for example, package.json) and verify the resolved version in package-lock.json or yarn.lock.

Workarounds

Restrict access to internal Power BI embedding portals through network segmentation and identity-based access controls until patched.
Enforce a strict Content Security Policy on pages embedding Power BI to limit script sources and framing origins.
Train users to avoid clicking untrusted links that load internal analytics or Power BI report pages.

bash

# Update the Power BI JavaScript SDK to the fixed version
npm install powerbi-client@latest --save

# Verify the installed version
npm list powerbi-client

# Rebuild and redeploy the application bundle
npm run build