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api
Cascade Set CORS to Allow All Origins
CORS configuration is too permissive after Cascade set it to allow all origins ('*'). This is a security vulnerability that allows any website to make requests to your API, potentially accessing user data through browser-based attacks like CSRF.
Cascade likely used wildcard to 'fix' CORS issues without understanding security implications.
Error Messages You Might See
CORS policy: Access-Control-Allow-Origin: *
CORS security configuration too permissive
Wildcard CORS allows all origins
Common Causes
- Cascade added .allowedOrigins("*") to permit all domains
- CORS configuration allows all HTTP methods and headers
- allowCredentials=true with wildcard origins (security violation)
How to Fix It
Restrict CORS to specific allowed domains only. Specify exact origins: allowedOrigins("https://example.com", "https://app.example.com"). Be explicit about allowed methods (GET, POST) and headers. Never combine allowCredentials(true) with wildcard. Review CORS policy in WebSecurityConfig.
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Get HelpFrequently Asked Questions
What's wrong with CORS wildcard?
Wildcard (*) allows any website to make requests. Combined with credentials, enables CSRF attacks.
How do I restrict CORS safely?
List specific allowed origins. Use allowCredentials(true) only with specific origins. Be explicit about methods/headers.