High severityRubyInsecure ConfigurationMEDIUM confidence
CORS Wildcard With Credentials
rack-cors allows any origin ('*') on a resource; combined with credentials this exposes authenticated responses cross-origin (CWE-942).
Standards mapping
- OWASP Top 10
- A05:2021 - Security Misconfiguration
- OWASP ASVS
- V14.5.3 (L1)
Vulnerable vs. safe
Flagged by this check
origins "*"Passes - the safe pattern
origins "https://app.example.com"Why it matters & how to fix it
rack-cors allows any origin ('*') on a resource; combined with credentials this exposes authenticated responses cross-origin (CWE-942). Replace the wildcard with an explicit allow-list of trusted origins and only enable credentials for those.
References
Rule ID integsec-ruby-cors-wildcard-with-credentials - engine: Opengrep - license: MIT - Copyright (c) IntegSec Inc.
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