H3: Unbounded Chunked Cookie Count in Session Cleanup Loop may Lead to Denial of Service

Summary The setChunkedCookie and deleteChunkedCookie functions in h3 trust the chunk count parsed from a user-controlled cookie value chunkedN without any upper bound validation. An unauthenticated attacker can send a single request with a crafted cookie header e.g., Cookie: h3=chunked999999 to a...