CVE-2024-40627
- Source
- https://nvd.nist.gov/vuln/detail/CVE-2024-40627
- Import Source
- https://storage.googleapis.com/osv-test-cve-osv-conversion/osv-output/CVE-2024-40627.json
- JSON Data
- https://api.test.osv.dev/v1/vulns/CVE-2024-40627
- Aliases
- Downstream
- Published
- 2024-07-15T19:21:40Z
- Modified
- 2025-10-20T19:33:55Z
- Severity
-
- 5.8 (Medium) CVSS_V3 - CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:L/I:N/A:N CVSS Calculator
- Summary
- OpaMiddleware does not filter HTTP OPTIONS requests
- Details
-
Fastapi OPA is an opensource fastapi middleware which includes auth flow. HTTP
OPTIONSrequests are always allowed byOpaMiddleware, even when they lack authentication, and are passed through directly to the application.OpaMiddlewareallows all HTTPOPTIONSrequests without evaluating it against any policy. If an application provides different responses to HTTPOPTIONSrequests based on an entity existing (such as to indicate whether an entity is writable on a system level), an unauthenticated attacker could discover which entities exist within an application. This issue has been addressed in release version 2.0.1. All users are advised to upgrade. There are no known workarounds for this vulnerability. - Database specific
{ "cwe_ids": [ "CWE-204" ] }- References