CVE-2020-36884
BrightSign Digital Signage Diagnostic Web Server 8.2.26 Unauthenticated SSRF
- State
- Published
- Severity
- 6.9 Medium
- Published
- Dec 10, 2025
- Updated
- Dec 11, 2025
- Reserved
- Dec 9, 2025
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.
Scores
| CVSS | Score | Vector | Source |
|---|---|---|---|
| 4.0 | 6.9 Medium | 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 | VulnCheck |
Weaknesses
- CWE-918 Server-Side Request Forgery (SSRF)
Affected Products
| Product | Versions |
|---|---|
BrightSign Digital Signage Diagnostic Web ServerBrightSign, LLC |
|
References
- ExploitDB-48843exploit
- BrightSign Homepageproduct
- Zero Science Lab Disclosurethird-party-advisory
- Zero Science GitHub Repositoryissue-tracking
- VulnCheck Advisory: BrightSign Digital Signage Diagnostic Web Server 8.2.26 Unauthenticated SSRFthird-party-advisory
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