CVE-2020-36884

BrightSign Digital Signage Diagnostic Web Server 8.2.26 Unauthenticated SSRF

Published Dec 10, 2025 CVSS 4.0 · 6.9 Medium EPSS 1.2% KEV · Not listed
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.

Remediation

No solution or workaround provided in the CVE record

Tracking

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Advisories

No advisories available
History
Type Values Removed Values Added
First Time appeared Brightsign
Brightsign digital Signage Diagnostic Web Server
Vendors & Products Brightsign
Brightsign digital Signage Diagnostic Web Server
Type Values Removed Values Added
Metrics ssvc

{'options': {'Automatable': 'yes', 'Exploitation': 'poc', 'Technical Impact': 'partial'}, 'version': '2.0.3'}

Type Values Removed Values Added
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.
Title BrightSign Digital Signage Diagnostic Web Server 8.2.26 Unauthenticated SSRF
Weaknesses CWE-918
References
Metrics cvssV4_0

{'score': 6.9, 'vector': 'CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:L/VA:N/SC:L/SI:L/SA:L'}

Weaknesses

Sources

Status
PUBLISHED
Assigner
VulnCheck
Published
Updated
Dec 11, 2025, 6:53 PM
Reserved
Dec 9, 2025, 11:05 AM
Status
Deferred
Published
Dec 10, 2025, 9:16 PM
Modified
Jun 17, 2026, 3:16 AM