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Case File

CVE-2017-11173

HIGH · CVSS 8.8 EPSS 2.34% Public Exploit

Source: NVD + CISA KEV + EPSS (historical backfill) · Published 2017-07-13 · Last synced 2026-08-04

Field Assessment

AI analysis pending.

Exhibit — Public Exploit Signal

A public exploit, PoC, GitHub repository or Metasploit reference was detected for this CVE.

GitHub PoC Links
github.com ↗
External Security References
packetstormsecurity.com ↗

Note: these links are listed for security research and verification purposes only.

CVE
CVE-2017-11173
Severity
HIGH
CVSS
8.8
EPSS
2.34%

Original Filing — NVD Description

Missing anchor in generated regex for rack-cors before 0.4.1 allows a malicious third-party site to perform CORS requests. If the configuration were intended to allow only the trusted example.com domain name and not the malicious example.net domain name, then example.com.example.net (as well as example.com-example.net) would be inadvertently allowed.