aiohttp allows unlimited trailer headers, leading to possible uncapped memory usage

Summary Insufficient restrictions in header/trailer handling could cause uncapped memory usage. Impact An application could cause memory exhaustion when receiving an attacker controlled request or response. A vulnerable web application could mitigate these risks with a typical reverse proxy...

CVE-2026-32881

ewe is a Gleam web server. ewe is a Gleam web server. Versions 0.6.0 through 3.0.4 are vulnerable to authentication bypass or spoofed proxy-trust headers. Chunked transfer encoding trailer handling merges declared trailer fields into req.headers after body parsing, but the denylist only blocks 9...

CVE-2026-32873

ewe is a Gleam web server. Versions 0.8.0 through 3.0.4 contain a bug in the handletrailers function where rejected trailer headers forbidden or undeclared cause an infinite loop. When handletrailers encounters such a trailer, three code paths lines 520, 523, 526 recurse with the original buffer...

CVE-2026-32881 ewe has an Overly Permissive List of Allowed Inputs

ewe is a Gleam web server. ewe is a Gleam web server. Versions 0.6.0 through 3.0.4 are vulnerable to authentication bypass or spoofed proxy-trust headers. Chunked transfer encoding trailer handling merges declared trailer fields into req.headers after body parsing, but the denylist only blocks 9...

CVE-2026-32881

ewe is a Gleam web server. ewe is a Gleam web server. Versions 0.6.0 through 3.0.4 are vulnerable to authentication bypass or spoofed proxy-trust headers. Chunked transfer encoding trailer handling merges declared trailer fields into req.headers after body parsing, but the denylist only blocks 9...

CVE-2026-32881 ewe has an Overly Permissive List of Allowed Inputs

ewe is a Gleam web server. ewe is a Gleam web server. Versions 0.6.0 through 3.0.4 are vulnerable to authentication bypass or spoofed proxy-trust headers. Chunked transfer encoding trailer handling merges declared trailer fields into req.headers after body parsing, but the denylist only blocks 9...

CVE-2026-32873

CVE-2026-32873 affects the Gleam-based web server ewe (versions 0.8.0–3.0.4). The bug in handle_trailers causes an infinite loop when encountering rejected trailers by recursively re-parsing the same header (using rest) instead of advancing past it (Buffer(header_rest, 0)). This leads to a perman...

CVE-2026-32873 ewe: Loop with Unreachable Exit Condition ('Infinite Loop')

ewe is a Gleam web server. Versions 0.8.0 through 3.0.4 contain a bug in the handletrailers function where rejected trailer headers forbidden or undeclared cause an infinite loop. When handletrailers encounters such a trailer, three code paths lines 520, 523, 526 recurse with the original buffer...

GHSA-9W88-79F8-M3VP Permissive List of Allowed Inputs in ewe

Summary ewe's chunked transfer encoding trailer handling merges declared trailer fields into req.headers after body parsing, but the denylist only blocks 9 header names. Security-sensitive headers like authorization, cookie, and x-forwarded-for can be injected or overwritten by a malicious client...

Permissive List of Allowed Inputs in ewe

Summary ewe's chunked transfer encoding trailer handling merges declared trailer fields into req.headers after body parsing, but the denylist only blocks 9 header names. Security-sensitive headers like authorization, cookie, and x-forwarded-for can be injected or overwritten by a malicious client...

PT-2026-26175

Summary ewe's chunked transfer encoding trailer handling merges declared trailer fields into req.headers after body parsing, but the denylist only blocks 9 header names. Security-sensitive headers like authorization, cookie, and x-forwarded-for can be injected or overwritten by a malicious client...

EUVD-2023-2799

Malicious code in bioql PyPI...

CVE-2025-59822 Http4s vulnerable to HTTP Request Smuggling due to improper handling of HTTP trailer section

Http4s is a Scala interface for HTTP services. In versions from 1.0.0-M1 to before 1.0.0-M45 and before 0.23.31, http4s is vulnerable to HTTP Request Smuggling due to improper handling of HTTP trailer section. This vulnerability could enable attackers to bypass front-end servers security controls...

HTTP Request Smuggling

Overview Affected versions of this package are vulnerable to HTTP Request Smuggling due to improper parsing of the HTTP trailer section in the parse function. An attacker can bypass security controls, launch targeted attacks against users, or poison web caches by crafting specially formed HTTP...

HTTP Request Smuggling

Overview Affected versions of this package are vulnerable to HTTP Request Smuggling due to improper parsing of the HTTP trailer section in the parse function. An attacker can bypass security controls, launch targeted attacks against users, or poison web caches by crafting specially formed HTTP...

PT-2025-39209

Name of the Vulnerable Software and Affected Versions Http4s versions 1.0.0-M1 through 1.0.0-M44 Http4s versions prior to 0.23.31 Description Http4s is susceptible to HTTP Request Smuggling because of incorrect handling of the HTTP trailer section. This can allow attackers to circumvent front-end...

tomcat: incorrectly parsed http trailer headers can cause request smuggling

A flaw was found in Apache Tomcat, where an improper input validation can occur. This flaw allows a malicious user to send a crafted request containing an invalid trailer header, which could be treated as multiple requests, potentially leading to request smuggling when behind a reverse proxy...

tomcat: HTTP request smuggling via malformed trailer headers

An improper Input validation flaw was found in Apache Tomcat due to incorrect parsing of HTTP trailer headers. A trailer header that exceeded the header size limit could cause Tomcat to treat a single request as multiple requests, leading to the possibility of request smuggling when behind a...

SUSE CVE-2023-45648

Improper Input Validation vulnerability in Apache Tomcat.Tomcat from 11.0.0-M1 through 11.0.0-M11, from 10.1.0-M1 through 10.1.13, from 9.0.0-M1 through 9.0.81 and from 8.5.0 through 8.5.93 did not correctly parse HTTP trailer headers. A specially crafted, invalid trailer header could cause Tomca...

SUSE CVE-2023-46589

Improper Input Validation vulnerability in Apache Tomcat.Tomcat from 11.0.0-M1 through 11.0.0-M10, from 10.1.0-M1 through 10.1.15, from 9.0.0-M1 through 9.0.82 and from 8.5.0 through 8.5.95 did not correctly parse HTTP trailer headers. A trailer header that exceeded the header size limit could...