OESA-2026-2585 cpp-httplib security update

A C++11 single-file header-only cross platform HTTP/HTTPS library. It's extremely easy to setup. Just include httplib.h file in your code! Security Fixes: 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...

OESA-2026-2586 cpp-httplib security update

A C++11 single-file header-only cross platform HTTP/HTTPS library. It's extremely easy to setup. Just include httplib.h file in your code! Security Fixes: 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...

io.netty/netty-codec-http: Netty: Request smuggling via incorrect parsing of HTTP/1.1 chunked transfer encoding extension values

A flaw was found in Netty. A remote attacker could exploit this vulnerability by sending specially crafted HTTP/1.1 chunked transfer encoding extension values. Due to incorrect parsing of quoted strings, this flaw enables request smuggling attacks, potentially allowing an attacker to bypass...

CVE-2026-45352

A flaw was found in cpp-httplib, a C++ HTTP/HTTPS library. A remote attacker could exploit this vulnerability by sending a specially crafted HTTP request that includes a negative chunk-size in the chunked Transfer-Encoding. This incorrect parsing leads to unbounded memory allocation, causing the...

Allocation of Resources Without Limits or Throttling

Overview Affected versions of this package are vulnerable to Allocation of Resources Without Limits or Throttling due to improper validation of the chunk-size field in chunked Transfer-Encoding within the ChunkedDecoder::readpayload function. An attacker can cause unbounded memory allocation and...

CVE-2026-45352

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...

CVE-2026-45352

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...

CVE-2026-45352 cpp-httplib DoS: Negative chunk-size in chunked Transfer-Encoding

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...

cpp-httplib 安全漏洞

cpp-httplib is a C++ library developed by Yhirose, which includes HTTP/HTTPS server and client components. Versions of cpp-httplib prior to 0.43.4 contained security vulnerabilities. These vulnerabilities stemmed from negative chunk sizes in chunked transmission encoding, leading to unbounded...

curl: Proxy CONNECT response poisoning via authentication retry in cf-h1-proxy.c (libcurl)

Summary: When an HTTP/1.x proxy returns a 407 with no Content-Length and no chunked transfer-encoding, lib/cf-h1-proxy.c singleheader sets ts-keepon = KEEPONDONE but never sets ts-closeconnection = TRUE. Because ts-closeconnection and conn-bits.close both stay false, the CONNECT tunnel state...

GHSA-RF5Q-VWXW-GMRF Bandit: Unauthenticated DoS via chunked request trailers in Bandit HTTP/1 decoder

Summary A worker-pinning denial of service in Bandit's HTTP/1 chunked transfer decoder. Any unauthenticated client that sends a Transfer-Encoding: chunked request whose body ends with a trailer field RFC 9112 §7.1.2 explicitly permits this causes the connection's worker process to spin forever in...

io.netty/netty-codec-http: Netty: Request smuggling via incorrect parsing of HTTP/1.1 chunked transfer encoding extension values

A flaw was found in Netty. A remote attacker could exploit this vulnerability by sending specially crafted HTTP/1.1 chunked transfer encoding extension values. Due to incorrect parsing of quoted strings, this flaw enables request smuggling attacks, potentially allowing an attacker to bypass...

io.netty/netty-codec-http: Netty: Request smuggling via incorrect parsing of HTTP/1.1 chunked transfer encoding extension values

A flaw was found in Netty. A remote attacker could exploit this vulnerability by sending specially crafted HTTP/1.1 chunked transfer encoding extension values. Due to incorrect parsing of quoted strings, this flaw enables request smuggling attacks, potentially allowing an attacker to bypass...

CVE-2026-39806

Loop with Unreachable Exit Condition 'Infinite Loop' vulnerability in mtrudel bandit allows unauthenticated remote denial of service via worker process exhaustion. 'Elixir.Bandit.HTTP1.Socket':doreadchunkeddata!/5 in lib/bandit/http1/socket.ex terminates only when the last-chunk line 0\r\n is...

CVE-2026-39806 HTTP/1 chunked decoder infinite loop on requests with trailer fields in bandit

Loop with Unreachable Exit Condition 'Infinite Loop' vulnerability in mtrudel bandit allows unauthenticated remote denial of service via worker process exhaustion. 'Elixir.Bandit.HTTP1.Socket':doreadchunkeddata!/5 in lib/bandit/http1/socket.ex terminates only when the last-chunk line 0\r\n is...

CVE-2026-39806 HTTP/1 chunked decoder infinite loop on requests with trailer fields in bandit

Loop with Unreachable Exit Condition 'Infinite Loop' vulnerability in mtrudel bandit allows unauthenticated remote denial of service via worker process exhaustion. 'Elixir.Bandit.HTTP1.Socket':doreadchunkeddata!/5 in lib/bandit/http1/socket.ex terminates only when the last-chunk line 0\r\n is...

CVE-2026-39806

The CVE-2026-39806 issue affects Bandit (Elixir.Bandit.HTTP1.Socket) where do_read_chunked_data!/5 loops indefinitely when a chunked request includes trailer fields. The root cause is that RFC 9112 §7.1.2 allows trailers after the 0-length chunk, but the code exits only when the next line is imme...

PT-2026-44975

Name of the Vulnerable Software and Affected Versions cpp-httplib versions prior to 0.43.4 Description A flaw in the ChunkedDecoder::read payload function of the cpp-httplib library allows a remote attacker to cause a denial of service. The issue occurs because the library uses std::strtoul to...

Linux Distros Unpatched Vulnerability : CVE-2026-7790

The Linux/Unix host has one or more packages installed that are impacted by a vulnerability without a vendor supplied patch available. - Uncontrolled Resource Consumption vulnerability in ninenines cowlib cowhttpte module allows Excessive Allocation. The chunked transfer-encoding parser in...

GHSA-32P9-57CR-4X65 cowlib cow_http_te module: Uncontrolled Resource Consumption vulnerability allows Excessive Allocation

Uncontrolled Resource Consumption vulnerability in ninenines cowlib cowhttpte module allows Excessive Allocation. The chunked transfer-encoding parser in cowhttpte accepts an unbounded number of hex digits in the chunk-size field. Each digit causes a bignum multiplication Len 16 + digit, so parsi...