CVE

CVE-2020-36884

6.9

CVSSmedium

Exploitable remotely over the internet · no authentication required.

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.

Attack Vector

Network

Privileges Req.

None

User Interaction

None

brightsign digital signage diagnostic web server

Updated Sep 18, 2026View on NVD →

S4E scanner

mediumProduct Based Web Vulnerabilities~10 seconds

BrightSign Digital Signage 8.2.26 - Server-Side Request Forgery

Unauthenticated Server-Side Request Forgery (SSRF) vulnerability exists in the BrightSign digital signage media player affecting the Diagnostic Web Server (DWS). The application parses user supplied data in the 'url' GET parameter to construct a diagnostics request to the Download Speed Test service. References: https://brightsign.zendesk.com/hc/en-us/articles/360056180694-Regarding-Advisory-ID-ZSL-2020-5595 https://www.zeroscience.mk/codes/brightsign_ssrf.txt https://nvd.nist.gov/vuln/detail/CVE-2020-36884

Used 2.4k times · url

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CVE history: brightsign digital signage diagnostic web server

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