CVE-2026-54273 AIOHTTP: HTTP/1 Pipelined Requests Queue Without Limit

AIOHTTP is an asynchronous HTTP client/server framework for asyncio and Python. Prior to 3.14.1, no limit was present on the number of pipelined requests that could be queued. An attacker may be able to use pipelined requests to use excessive amounts of memory, potentially leading to DoS. This...

Netty has HttpClientCodec response desynchronization

Summary If HttpClientCodec is configured, there are use cases when a response body from one request, can be parsed as another's. Details HttpClientCodec pairs each inbound response with an outbound request by queue.poll once per response, including for 1xx. If the client pipelines GET then HEAD a...

PT-2026-38376

Name of the Vulnerable Software and Affected Versions Netty versions prior to 4.2.13.Final Netty versions prior to 4.1.133.Final Description In the HttpClientCodec, inbound responses are paired with outbound requests using queue.poll once per response, including for 1xx responses. When HTTP/1.1...

CVE-2026-40396

Varnish Cache 9 before 9.0.1 allows a "workspace overflow" denial of service daemon panic after timeoutlinger. A malicious client could send an HTTP/1 request, wait long enough until the session releases its worker thread timeoutlinger and resume traffic before the session is closed timeoutidle...

UBUNTU-CVE-2026-40396

Varnish Cache 9 before 9.0.1 allows a "workspace overflow" denial of service daemon panic after timeoutlinger. A malicious client could send an HTTP/1 request, wait long enough until the session releases its worker thread timeoutlinger and resume traffic before the session is closed timeoutidle...

CVE-2026-40396

Varnish Cache 9 prior to 9.0.1 is affected by a workspace overflow DoS (daemon panic) that can be triggered by a malicious HTTP/1 request sequence: after timeout_linger releases a worker thread, resuming traffic with multiple requests before the session closes (timeout_idle) can cause a pipelinin...

CVE-2026-40396

Varnish Cache 9 before 9.0.1 allows a "workspace overflow" denial of service daemon panic after timeoutlinger. A malicious client could send an HTTP/1 request, wait long enough until the session releases its worker thread timeoutlinger and resume traffic before the session is closed timeoutidle...

CVE-2019-16792

Waitress through version 1.3.1 allows request smuggling by sending the Content-Length header twice. Waitress would header fold a double Content-Length header and due to being unable to cast the now comma separated value to an integer would set the Content-Length to 0 internally. If two...

CVE-2026-21428

cpp-httplib is a C++11 single-file header-only cross platform HTTP/HTTPS library. Prior to version 0.30.0, the writeheaders function does not check for CR & LF characters in user supplied headers, allowing untrusted header value to escape header lines. This vulnerability allows attackers to add...

UBUNTU-CVE-2026-21428

cpp-httplib is a C++11 single-file header-only cross platform HTTP/HTTPS library. Prior to version 0.30.0, the writeheaders function does not check for CR & LF characters in user supplied headers, allowing untrusted header value to escape header lines. This vulnerability allows attackers to add...

Linux Distros Unpatched Vulnerability : CVE-2026-21428

The Linux/Unix host has one or more packages installed that are impacted by a vulnerability without a vendor supplied patch available. - cpp-httplib is a C++11 single-file header-only cross platform HTTP/HTTPS library. Prior to version 0.30.0, the writeheaders function does not check for CR & LF...

EUVD-2020-0109

Malware in sbrugna...

EUVD-2020-0445

Malware in sbrugna...

EUVD-2020-0115

Malware in sbrugna...

EUVD-2020-1430

Malware in sbrugna...

EUVD-2019-0157

Malware in sbrugna...

EUVD-2020-0239

Malware in sbrugna...

EUVD-2022-41236

Malicious code in bioql PyPI...

EUVD-2024-0187

Malicious code in bioql PyPI...

Security Bulletin: Waitress WSGI Server Vulnerability: HTTP Pipelining Request Handling with Disabled Lookahead

Summary Waitress is a Web Server Gateway Interface server for Python 2 and 3. A remote client may send a request that is exactly recvbytes defaults to 8192 long, followed by a secondary request using HTTP pipelining. When request lookahead is disabled default we won't read any more requests, and...