PYSEC-2026-1361 OpaMiddleware does not filter HTTP OPTIONS requests

Summary HTTP OPTIONS requests are always allowed by OpaMiddleware, even when they lack authentication, and are passed through directly to the application. The maintainer uncertain whether this should be classed as a "bug" or "security issue" – but is erring on the side of "security issue" as an...

CVE-2024-40627

Fastapi OPA is an opensource fastapi middleware which includes auth flow. HTTP OPTIONS requests are always allowed by OpaMiddleware, even when they lack authentication, and are passed through directly to the application. OpaMiddleware allows all HTTP OPTIONS requests without evaluating it against...

PT-2024-28950

Name of the Vulnerable Software and Affected Versions Fastapi OPA versions prior to 2.0.1 Description The issue allows unauthenticated attackers to discover which entities exist within an application by sending HTTP OPTIONS requests. This is because OpaMiddleware allows all HTTP OPTIONS requests...