CVE-2020-36884
Medium
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.
SeverityMedium
CVSS6.9
Exploit probability—
ProductBrightSign Digital Signage Diagnostic Web Server
PublishedDec 10, 2025
First seenDec 10, 2025
Weakness typeCWE-918Server-side request forgery (SSRF)
How to fix
Sources list no fixed version or patch link for this vulnerability.
Affected products
| Product | Affected versions | Fixed in |
|---|---|---|
| BrightSign, LLC BrightSign Digital Signage Diagnostic Web Server | v ≤ 8.2.26 | — |
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