EUVD-2026-80779

react/http: A malformed HTTP chunked body can lead to a denial-of-service and peg the CPU...

react/http: A malformed HTTP chunked body can lead to a denial-of-service and peg the CPU

Summary A malformed HTTP message using Transfer-Encoding: chunked can drive React\Http\Io\ChunkedDecoder into an infinite loop, pegging a CPU core and freezing the event loop. Because ReactPHP is single-threaded, one such message stalls the entire process for every client until it is killed. Both...

GHSA-X424-64QH-5J54 react/http: A malformed HTTP chunked body can lead to a denial-of-service and peg the CPU

Summary A malformed HTTP message using Transfer-Encoding: chunked can drive React\Http\Io\ChunkedDecoder into an infinite loop, pegging a CPU core and freezing the event loop. Because ReactPHP is single-threaded, one such message stalls the entire process for every client until it is killed. Both...

Infinite loop

Overview Affected versions of this package are vulnerable to Infinite loop via the ChunkedDecoder::handleData process. An attacker can cause the process to enter an infinite loop and exhaust CPU resources by sending a malformed HTTP message with Transfer-Encoding: chunked that exploits specific...

CVE-2026-84997

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...

CVE-2026-84997 react/http: A malformed HTTP chunked body can lead to a denial-of-service and peg the CPU

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...

CVE-2026-84997 react/http: A malformed HTTP chunked body can lead to a denial-of-service and peg the CPU

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...

CVE-2026-84997

react/http (ReactPHP) is vulnerable to a denial-of-service via a malformed HTTP chunked body. The ChunkedDecoder enters an infinite loop when it receives either an incomplete terminal-chunk trailer without CRLF or exactly two non-CRLF bytes after a completed non-terminal chunk, because handleData...

CVE-2026-84997

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...

CVE-2026-84997 react/http: A malformed HTTP chunked body can lead to a denial-of-service and peg the CPU

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...

CVE-2026-84997: Loop with Unreachable Exit Condition

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...

cpp-httplib ChunkedDecoder Buffer Overflow DoS

The vulnerability of the ChunkedDecoder::readpayload function in the cpp-httplib library is related to insufficient validation of input data. Exploiting this vulnerability could allow an attacker to cause service failures...

CVE-2026-45352: Improper Input Validation

cpp-httplib is a C++11 single-file header-only cross platform HTTP/HTTPS library. Prior to 0.43.4, negative chunk-size in chunked Transfer-Encoding causes unbounded memory allocation and process crash. The ChunkedDecoder::readpayload function in cpp-httplib httplib.h parses the chunk-size field o...