urllib3: Chunked Deflate streaming can enter an infinite loop

Impact urllib3's streaming API is designed for the efficient handling of large HTTP responses by reading content in chunks instead of loading the entire response body into memory at once. urllib3 can decompress response bodies according to the HTTP Content-Encoding header. When streaming a...

EUVD-2026-89017

urllib3: HTTPResponse.stream/readchunked buffers an unbounded chunk-size line into memory...

netty: io.netty/netty-codec-http: Netty: Request smuggling via malformed Transfer-Encoding parsing

A flaw was found in Netty. This vulnerability allows a remote attacker to perform request smuggling attacks due to incorrect parsing of malformed Transfer-Encoding headers. By exploiting this flaw, an attacker can bypass security controls and potentially access sensitive information or manipulate...

Apache2 - Transfer-Encoding Chunked XSS

Apache2 PHP before 5.6.38, 7.0.x before 7.0.32, 7.1.x before 7.1.22, and 7.2.x before 7.2.10 contain a reflected cross-site scripting vulnerability caused by mishandling of chunked transfer-encoding requests in sapi/apache2handler/sapiapache2.c. Attackers can execute malicious scripts via crafted...

CVE-2026-97689

urllib3 is an HTTP client library for Python. From 1.10.3 until 2.8.0, the HTTPResponse.readchunked and HTTPResponse.stream methods can allocate unbounded memory because the streaming chunk parser buffers the chunk-size field until newline or EOF without a length bound. The trigger is that a...

CVE-2026-97689 urllib3: HTTPResponse.stream()/read_chunked() buffers an unbounded chunk-size line into memory

urllib3 is an HTTP client library for Python. From 1.10.3 until 2.8.0, the HTTPResponse.readchunked and HTTPResponse.stream methods can allocate unbounded memory because the streaming chunk parser buffers the chunk-size field until newline or EOF without a length bound. The trigger is that a...

CVE-2026-97689

The urllib3 Python HTTP client library (versions 1.10.3 through 2.8.0 ) is vulnerable to an unbounded memory allocation issue in the HTTPResponse.read_chunked and HTTPResponse.stream methods. The root cause is that the streaming chunk parser buffers the chunk-size field until it encounters a newl...

CVE-2026-97689 urllib3: HTTPResponse.stream()/read_chunked() buffers an unbounded chunk-size line into memory

urllib3 is an HTTP client library for Python. From 1.10.3 until 2.8.0, the HTTPResponse.readchunked and HTTPResponse.stream methods can allocate unbounded memory because the streaming chunk parser buffers the chunk-size field until newline or EOF without a length bound. The trigger is that a...

CVE-2026-77756

A flaw was found in Apache Tomcat. This vulnerability, known as HTTP Request/Response Smuggling, occurs when Tomcat processes the transfer-encoding header for an HTTP/1.0 request while operating behind a reverse proxy. A remote attacker could exploit this to cause a denial of service, leading to...

CVE-2026-66752-HTTP-Request-Smuggling-via-Unparsed-Transfer-Encoding-Values-tiny_http-

Aviso de Seguridad: Contrabando de peticiones HTTP mediante valores Transfer-Encoding no analizados tinyhttp ID de CVE asignado: CVE-2026-66752 Resumen tinyhttp solo comprueba si hay una cabecera Transfer-Encoding. Nunca examina su valor. Cualquier valor, incluidos codings que no son chunked y...

CVE-2024-14029

A vulnerability was discovered in Tornado where it improperly handles HTTP requests containing duplicate Transfer-Encoding: chunked headers. When duplicate Transfer-Encoding headers are present in an incoming request, Tornado ignores them and treats the request as body-less, leaving the chunked...

EUVD-2026-88220

Inconsistent Interpretation of HTTP Requests 'HTTP Request/Response Smuggling' vulnerability in elixir-mint mint allows a malicious HTTP/1 server to desynchronize an intermediary and the Mint client on a pooled connection, poisoning the responses to subsequent requests that share the connection...

CVE-2026-94194 Mint HTTP/1 client applies chunked framing when chunked is not the final transfer coding, enabling response smuggling through intermediaries

Inconsistent Interpretation of HTTP Requests 'HTTP Request/Response Smuggling' vulnerability in elixir-mint mint allows a malicious HTTP/1 server to desynchronize an intermediary and the Mint client on a pooled connection, poisoning the responses to subsequent requests that share the connection...

CVE-2026-94194 Mint HTTP/1 client applies chunked framing when chunked is not the final transfer coding, enabling response smuggling through intermediaries

Inconsistent Interpretation of HTTP Requests 'HTTP Request/Response Smuggling' vulnerability in elixir-mint mint allows a malicious HTTP/1 server to desynchronize an intermediary and the Mint client on a pooled connection, poisoning the responses to subsequent requests that share the connection...

CVE-2026-94194

The elixir-mint library (versions 0.1.0 to 1.11.0 ) is vulnerable to HTTP Request/Response Smuggling due to the inconsistent interpretation of HTTP/1 framing. Specifically, the message_body/1 function in lib/mint/http1.ex incorrectly applies chunked framing when chunked is the first coding listed...

EEF-CVE-2026-94194 Mint HTTP/1 client applies chunked framing when chunked is not the final transfer coding, enabling response smuggling through intermediaries

Summary Inconsistent Interpretation of HTTP Requests 'HTTP Request/Response Smuggling' vulnerability in elixir-mint mint allows a malicious HTTP/1 server to desynchronize an intermediary and the Mint client on a pooled connection, poisoning the responses to subsequent requests that share the...

CVE-2020-25613

POC POST / HTTP/1.1 Host: 127.0.0.1:1080 Content-Type: text/html Content-Length: 129 Connection: keep-alive Transfer-Encoding: 0xb chunked 1 A 0 POST /flag HTTP/1.1 Host: 127.0.0.1:1080 Content-Length: 180 Connection: keep-alive Content-Type: text/html URI:...

CVE-2013-2028-Exploit

CVE-2013-2028 Exploit Vulnerability Details Vulnerable software: Nginx 1.3.9 Vulnerable function: ngxhttpparsechunked CVE-2013-2028 is an integer overflow vulnerability in Nginx's HTTP chunked transfer encoding parser. Under the conditions targeted by this laboratory environment, the vulnerabilit...

CVE-2026-67181-HTTP-Request-Smuggling-via-Transfer-Encoding-Desynchronization-rouille-

Security Advisory: HTTP Request Smuggling via Transfer-Encoding Desynchronization rouille Assigned CVE ID: CVE-2026-67181 Summary rouille::proxy::proxy forwards the client's Transfer-Encoding header to the backend unchanged, but writes the request body that tinyhttp has already de-chunked. It nev...

nodejs-http-transfer-encoding-smuggling-poc

nodejs-http-transfer-encoding-smuggling-poc PoC of HTTP Request Smuggling in nodejs CVE-2020-8287 src/index.js header: 'Host', '127.0.0.1', 'Transfer-Encoding', 'chunked', 'Transfer-Encoding', 'eee' , body: 'A' header: 'Host', '127.0.0.1' , body: '' data: 'HTTP/1.1 200 OK\r\n' + 'Date: Tue, 05 Ja...