CVE-2026-77360 oRPC: Vary Header Injection in CORS Plugin leading to potential Cache/CORS Bypass

oRPC is an tool that helps build APIs that are end-to-end type-safe and adhere to OpenAPI standards. Prior to 1.14.8, the @orpc/server CORS plugin in packages/server/src/plugins/cors.ts copies a client's incoming Vary request header into the response instead of controlling Vary as a response-only...

Duplicate Advisory: Hono vulnerable to Vary Header Injection leading to potential CORS Bypass

Duplicate Advisory This advisory has been withdrawn because it is a duplicate of GHSA-q7jf-gf43-6x6p. This link is maintained to preserve external references. Original Description Hono before 4.10.2 fixed in 4.10.3 contains a flaw in its CORS middleware: when the origin is not set to "", the...

EUVD-2025-35885

Hono vulnerable to Vary Header Injection leading to potential CORS Bypass...

Hono vulnerable to Vary Header Injection leading to potential CORS Bypass

Summary A flaw in the CORS middleware allowed request Vary headers to be reflected into the response, enabling attacker-controlled Vary values and potentially affecting cache behavior. Details The middleware previously copied the Vary header from the request when origin was not set to "". Since...