refactor/#214 cors 설정 수정 #215
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🔭 Outside diff range comments (1)
aics-common/src/main/java/kgu/developers/common/config/SecurityConfig.java (1)
101-101: 💡 Verification agent🧩 Analysis chain
URL 형식 확인 필요
마지막 허용 URL
https://aics-client-dev.vercel.app/에 슬래시(/)가 포함되어 있습니다. 다른 모든 URL은 슬래시 없이 설정되어 있으므로, 일관성을 위해 확인이 필요합니다.URL 형식이 맞는지 확인하기 위해 다음 명령어를 실행해볼 수 있습니다:
이 슬래시가 브라우저에서 CORS 요청을 처리할 때 문제를 일으킬 수 있는지 확인하세요:
🏁 Script executed:
#!/bin/bash # URL이 실제로 존재하는지 확인하고 리다이렉션 여부 체크 curl -I https://aics-client-dev.vercel.app/ curl -I https://aics-client-dev.vercel.appLength of output: 1981
🌐 Web query:
Does trailing slash in CORS allowedOrigins affect browser requests?💡 Result:
Yes, trailing slashes in CORS
allowedOriginsconfigurations can affect browser requests due to how browsers and servers handle origin validation. Here's a detailed analysis:Key Considerations
Origin Format
Browsers send theOriginheader without trailing slashes (e.g.,https://example.com), even if the URL includes one. CORS origins are defined as a combination of scheme, hostname, and port – no path component is allowed [2][9].Matching Behavior
Servers compare the browser'sOriginheader against configuredallowedOriginsexactly. A trailing slash creates a mismatch:
- ✅ Matches:
allowedOrigins: "https://example.com"vs browser'sOrigin: https://example.com- ❌ Fails:
allowedOrigins: "https://example.com/"vs browser'sOrigin: https://example.com[4][5]Common Pitfalls
- Express.js: A trailing slash in
origin: "https://domain-a.com/"prevents theAccess-Control-Allow-Originheader from being sent [4].- AWS/Cloud Services: Bucket CORS configurations with trailing slashes fail validation checks [5][7].
- Apollo/Spring: Explicit warnings in documentation to avoid trailing slashes in origin patterns [2][9].
Workarounds and Solutions
Scenario Problem Solution Single origin Trailing slash in config Remove slash ( https://example.com→https://example.com) [4][9]Wildcard subdomains Patterns like https://*.company.domainUse regex patterns or framework-specific normalization (e.g., Spring's CorsConfigurationtrailing slash trimming) [1]Multiple origins Mixing paths/ports List origins explicitly without trailing slashes or paths [2][9] Framework-Specific Guidance
Express.js:
// ❌ Incorrect origin: "https://domain-a.com/" // ✅ Correct origin: "https://domain-a.com"ASP.NET Core:
// Automatically handles origin validation without paths policy.WithOrigins("https://example.com");Spring Framework:
Implements pattern matching that ignores trailing slashes in some configurations [1][8].Why This Matters
Mismatched origins cause hard-to-debug CORS failures where:
- Preflight requests succeed (200 OK) but lack CORS headers [6][8]
- Browsers block requests with console errors like:
Access-Control-Allow-Origin header value 'X' not equal to supplied origin 'Y'[5]Always validate CORS configurations using browser developer tools to inspect both
Originrequest headers andAccess-Control-Allow-Originresponse headers [4][6].Citations:
- 1: Ignore trailing slash in CorsConfiguration origin patterns spring-projects/spring-framework#26892
- 2: https://www.apollographql.com/docs/graphos/routing/security/cors
- 3: https://tiffanybbrown.com/2011/12/dom-access-control-using-cors/index.html
- 4: https://dev.to/sepiyush/troubleshooting-cors-issues-in-expressjs-a-simple-misconfiguration-2e4k
- 5: https://repost.aws/questions/QU3C0ZRB87Tne7HF434VtsUw/access-control-allow-origin-header-value-not-equal-to-the-supplied-origin-post-method
- 6: https://learn.microsoft.com/en-us/aspnet/core/security/cors?view=aspnetcore-9.0
- 7: https://www.googlecloudcommunity.com/gc/Infrastructure-Compute-Storage/CORS-settings-has-no-effect/m-p/766266
- 8: https://github.com/dotnet/AspNetCore.Docs/blob/main/aspnetcore/security/cors.md
- 9: https://www.apollographql.com/docs/apollo-server/security/cors
- 10: Weird Chrome-only, macOS-only problem regarding trailing slashes in servers.json shlinkio/shlink-web-client#380
CORS 설정: trailing slash 문제 수정 필요
- 보안 구성 파일(
aics-common/src/main/java/kgu/developers/common/config/SecurityConfig.java, 101번째 줄)에서 마지막 허용 URL이"https://aics-client-dev.vercel.app/"처럼 trailing slash가 포함되어 있습니다.- 테스트결과 두 URL(슬래시 포함/미포함) 모두 HTTP/2 200 응답을 반환하나, 웹 쿼리 결과와 CORS 동작 원리에 따르면 브라우저는 trailing slash 없이 Origin 헤더를 전송합니다.
- 이로 인해, 서버 측
allowedOrigins설정에 trailing slash가 포함되면 브라우저의 Origin과 불일치하여 CORS 정책 상 차단될 가능성이 있습니다.- 다른 모든 URL이 슬래시 없이 설정된 점을 고려하여, 일관성을 위해 해당 URL에서 trailing slash를 제거하는 것을 권장합니다.
🧹 Nitpick comments (1)
aics-common/src/main/java/kgu/developers/common/config/SecurityConfig.java (1)
87-106: CORS 설정 개선 고려사항현재 CORS 설정은 모든 헤더(
"*")와 모든 HTTP 메서드("*")를 허용하고 있습니다. 개발 환경에서는 편리하지만, 보안을 위해 프로덕션 환경에서는 필요한 헤더와 메서드만 명시적으로 허용하는 것이 좋습니다.프로덕션 환경에서는 다음과 같이 필요한 헤더와 메서드만 명시적으로 설정하는 것을 고려해보세요:
- config.setAllowedHeaders(Collections.singletonList("*")); - config.setAllowedMethods(Collections.singletonList("*")); + config.setAllowedHeaders(Arrays.asList("Origin", "Content-Type", "Accept", "Authorization")); + config.setAllowedMethods(Arrays.asList("GET", "POST", "PUT", "DELETE", "OPTIONS", "PATCH"));또한 환경(개발/테스트/프로덕션)에 따라 다른 CORS 설정을 적용하는 방식도 고려해볼 수 있습니다.
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🔇 Additional comments (1)
aics-common/src/main/java/kgu/developers/common/config/SecurityConfig.java (1)
94-94: CORS 설정에 새로운 로컬 개발 서버가 정상적으로 추가되었습니다.CORS 허용 목록에
http://localhost:3001을 추가하여 해당 오리진에서의 API 요청을 정상적으로 처리할 수 있게 되었습니다. 이는 PR 목표와 일치하며 로컬 개발 환경을 확장하는 데 도움이 됩니다.
Summary
cors 설정 수정
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