CVE-2026-100391

Received Received - Intake

Server-Side Request Forgery in MediaFlow Proxy

Publication date: 2026-09-25

Last updated on: 2026-09-25

Assigner: VulnCheck

Description

MediaFlow Proxy through 2.4.9 contains a server-side request forgery vulnerability in the /proxy routes due to missing and incomplete destination validation in the d query parameter. Remote attackers can supply arbitrary internal URLs including loopback and cloud metadata endpoints to read full responses from the proxy server.

CVSS Scores

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Meta Information

Published

2026-09-25

Last Modified

2026-09-25

Generated

2026-09-26

AI Q&A

2026-09-26

EPSS Evaluated

N/A

NVD

CVE-2026-100391

Affected Vendors & Products

Vendor	Product	Version / Range
mediaflow	proxy	2.4.9

Helpful Resources

Exploitability

CWE

KEV

CWE ID	Description
CWE-918	The web server receives a URL or similar request from an upstream component and retrieves the contents of this URL, but it does not sufficiently ensure that the request is being sent to the expected destination.

Attack-Flow Graph

Executive Summary

MediaFlow Proxy through version 2.4.9 has a server-side request forgery (SSRF) vulnerability in the /proxy routes. This flaw occurs because the d query parameter lacks proper destination validation, allowing attackers to supply arbitrary internal URLs. These URLs can include loopback addresses and cloud metadata endpoints, enabling attackers to read full responses from the proxy server.

Detection Guidance

Detecting this SSRF vulnerability requires checking for improper handling of the /proxy routes in MediaFlow Proxy versions up to 2.4.9. Monitor proxy server logs for unusual requests to internal or loopback addresses via the d query parameter. Test by sending crafted requests to internal endpoints like 127.0.0.1 or cloud metadata services.

Impact Analysis

This vulnerability allows remote attackers to access internal systems or sensitive data through the proxy server. Attackers could exploit it to read internal network resources, access cloud metadata, or interact with other internal services, potentially leading to data breaches or unauthorized access to confidential information.

Compliance Impact

This SSRF vulnerability could lead to unauthorized access to sensitive data, violating GDPR's data protection requirements and HIPAA's safeguards for protected health information. Organizations may face compliance violations, legal penalties, and reputational damage if this flaw is exploited to access regulated data.

Mitigation Strategies

Immediately upgrade MediaFlow Proxy to the latest version beyond 2.4.9. Implement strict allowlists for the d query parameter to block internal and loopback URLs. Disable or restrict access to /proxy routes if unused. Add network-level controls to prevent outbound connections to internal IP ranges.

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