{"id":"CVE-2026-84997","aliases":[],"url":"https://o3.security/vulnerability/CVE-2026-84997","summary":"react/http is an event-driven, streaming HTTP client and server implementation for ReactPHP. From 0.6.0 until 1.11.1, React\\Http\\Io\\ChunkedDecoder could enter an infinite loop while…","details":"react/http is an event-driven, streaming HTTP client and server implementation for ReactPHP. From 0.6.0 until 1.11.1, React\\Http\\Io\\ChunkedDecoder could enter an infinite loop while processing a malformed Transfer-Encoding: chunked body because handleData required its buffer to shrink on every iteration. An incomplete terminal-chunk trailer without CRLF left the buffer unchanged after strpos returned false, and exactly two non-CRLF bytes after a completed non-terminal chunk bypassed both the error and wait guards. The affected decoder processes request bodies for React\\Http\\HttpServer and response bodies for React\\Http\\Browser, allowing a malicious client to freeze a server or a malicious or compromised server to freeze a client. A reverse proxy that normalizes inbound requests may protect the server direction but does not protect outbound Browser requests. This issue is fixed in version 1.11.1.","published":"2026-09-16T15:18:00.863","modified":"2026-09-16T15:18:00.863","cvss":{"score":7.5,"severity":"HIGH","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H"},"epss":null,"cisaKev":null,"exploitsKnown":null,"affectedPackages":[],"fix":{"url":"https://github.com/reactphp/http/commit/b6d4688790adf3797071fcf88a3fc4225f30486a","label":"reactphp/http@b6d4688"},"references":[{"type":"WEB","url":"https://github.com/reactphp/http/commit/b6d4688790adf3797071fcf88a3fc4225f30486a"},{"type":"WEB","url":"https://github.com/reactphp/http/releases/tag/v1.11.1"},{"type":"WEB","url":"https://github.com/reactphp/http/security/advisories/GHSA-x424-64qh-5j54"},{"type":"WEB","url":"https://github.com/reactphp/http/security/advisories/GHSA-x424-64qh-5j54"}],"provenance":{"sources":["OSV.dev","NVD","FIRST.org (EPSS)"],"lastVerified":"2026-09-16T15:18:00.863"}}