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.
CVSS v4.0 Metrics
Exploitability
Attack VectorNetwork
ComplexityLow
RequirementsNone
PrivilegesNone
User InteractionNone
Threat
Exploit MaturityPoC
Vulnerable System
ConfidentialityNone
IntegrityLow
AvailabilityNone
Subsequent System
ConfidentialityLow
IntegrityLow
AvailabilityLow
Supplemental
SafetyNegligible
AutomatableYes
RecoveryAutomatic
Value DensityConcentrated
UrgencyMedium
Change Log
| Date | Source | Changes | Score |
|---|
| 2026-07-21 | nuclei | E: U→P | 2.7 → 5.5 |
| 2026-07-21 | cve.org | initial, patch: Unavailable | 2.7 |
Affected Software
| Vendor | Product | Version |
|---|
| BrightSign, LLC | BrightSign Digital Signage Diagnostic Web Server | ≤ 8.2.26 |
Published: 2025-12-10
