CVE-2020-36884
Unknown Unknown - Not Provided
BaseFortify

Publication date: 2025-12-10

Last updated on: 2025-12-11

Assigner: VulnCheck

Description
BrightSign Digital Signage Diagnostic Web Server 8.2.26 and less contains an unauthenticated server-side request forgery vulnerability in the 'url' GET parameter of the Download Speed Test service. Attackers can specify external domains to bypass firewalls and perform network enumeration by forcing the application to make arbitrary HTTP requests to internal network hosts.
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Meta Information
Published
2025-12-10
Last Modified
2025-12-11
Generated
2026-06-16
AI Q&A
2025-12-10
EPSS Evaluated
2026-06-14
NVD
CVE-2020-36884
Affected Vendors & Products
Showing 1 associated CPE
Vendor Product Version / Range
brightsign digital_signage_diagnostic_web_server 8.2.26
Helpful Resources
Exploitability
CWE
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KEV
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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.
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Executive Summary

This vulnerability is an unauthenticated server-side request forgery (SSRF) in BrightSign Digital Signage Diagnostic Web Server version 8.2.26 and earlier. It occurs in the 'url' GET parameter of the Download Speed Test service, allowing attackers to make the server send arbitrary HTTP requests to external or internal network hosts without authentication.

Impact Analysis

An attacker can exploit this vulnerability to bypass firewalls and perform network enumeration by forcing the application to make HTTP requests to internal network hosts. This can lead to unauthorized access to internal network information and potential further attacks within the network.

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