CVE-2026-88004: Interpretation Conflict

Traefik is an open source HTTP reverse proxy and load balancer. From 3.2.0 until 3.7.13, Traefik entrypoint defenses aliasHeadersStrategy, underscoreHeadersStrategy, and forwardedHeaders inspect req.Header but not req.Trailer, allowing an unauthenticated client to submit an aliasing or trusted...

CVE-2026-63379

Libevent is an event notification library. Prior to 2.1.13 and 2.2.2-alpha, libevent processes chunked HTTP trailers in http.c through evhttpreadtrailer and merges them into request headers. The fix introduces evhttpparseheadersimpl and a temporary trailer header list. An unauthenticated remote...

EUVD-2026-63562

Libevent is an event notification library. Prior to 2.1.13 and 2.2.2-alpha, libevent processes chunked HTTP trailers in http.c through evhttpreadtrailer and merges them into request headers. The fix introduces evhttpparseheadersimpl and a temporary trailer header list. An unauthenticated remote...

CVE-2026-63379

CVE-2026-63379 affects Libevent , an event notification library, in its HTTP trailer handling within http.c. The function evhttp_read_trailer merges chunked HTTP trailers directly into request headers (req->input_headers) rather than parsing them separately. An unauthenticated remote attacker ...

CVE-2026-73495

blaze is a Scala library for building asynchronous pipelines, with a focus on network IO. Prior to 0.23.18 and 1.0.0-M42, blaze-server can merge HTTP/1.1 chunked-body trailer fields into Request.headers. Because trailer fields are attacker-controlled, an unauthenticated remote client can inject...

EUVD-2026-57635

blaze is a Scala library for building asynchronous pipelines, with a focus on network IO. Prior to 0.23.18 and 1.0.0-M42, blaze-server can merge HTTP/1.1 chunked-body trailer fields into Request.headers. Because trailer fields are attacker-controlled, an unauthenticated remote client can inject...

CVE-2026-73495 blaze: Chunked-body trailer fields promoted into Request.headers in blaze-server (front-end header-sanitization bypass)

blaze is a Scala library for building asynchronous pipelines, with a focus on network IO. Prior to 0.23.18 and 1.0.0-M42, blaze-server can merge HTTP/1.1 chunked-body trailer fields into Request.headers. Because trailer fields are attacker-controlled, an unauthenticated remote client can inject...

CVE-2026-73495 blaze: Chunked-body trailer fields promoted into Request.headers in blaze-server (front-end header-sanitization bypass)

blaze is a Scala library for building asynchronous pipelines, with a focus on network IO. Prior to 0.23.18 and 1.0.0-M42, blaze-server can merge HTTP/1.1 chunked-body trailer fields into Request.headers. Because trailer fields are attacker-controlled, an unauthenticated remote client can inject...

PT-2026-76578

Libevent is an event notification library. Prior to 2.1.13 and 2.2.2-alpha, libevent processes chunked HTTP trailers in http.c through evhttp read trailer and merges them into request headers. The fix introduces evhttp parse headers impl and a temporary trailer header list. An unauthenticated...

EUVD-2023-2799

Malicious code in bioql PyPI...

CVE-2025-59822: Inconsistent Interpretation of HTTP Requests

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...

SUSE SLES15 Security Update : python-aiohttp (SUSE-SU-2025:03201-1)

The remote SUSE Linux SLES15 / SLESSAP15 host has a package installed that is affected by a vulnerability as referenced in the SUSE-SU-2025:03201-1 advisory. - CVE-2025-53643: request smuggling vulnerability due to incorrect parsing trailer sections of an HTTP request bsc1246517. Tenable has...

CVE-2025-58068: Inconsistent Interpretation of HTTP Requests

Eventlet is a concurrent networking library for Python. Prior to version 0.40.3, the Eventlet WSGI parser is vulnerable to HTTP Request Smuggling due to improper handling of HTTP trailer sections. This vulnerability could enable attackers to, bypass front-end security controls, launch targeted...

CVE-2025-53643: Inconsistent Interpretation of HTTP Requests

AIOHTTP is an asynchronous HTTP client/server framework for asyncio and Python. Prior to version 3.12.14, the Python parser is vulnerable to a request smuggling vulnerability due to not parsing trailer sections of an HTTP request. If a pure Python version of aiohttp is installed i.e. without the...

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...

USN-7106-1 tomcat9 vulnerabilities

It was discovered that Tomcat did not include the secure attribute for session cookies when using the RemoteIpFilter with requests from a reverse proxy. An attacker could possibly use this issue to leak sensitive information. CVE-2023-28708 It was discovered that Tomcat had a vulnerability in its...

Ubuntu 18.04 LTS / 20.04 LTS / 22.04 LTS : Tomcat vulnerabilities (USN-7106-1)

The remote Ubuntu 18.04 LTS / 20.04 LTS / 22.04 LTS host has packages installed that are affected by multiple vulnerabilities as referenced in the USN-7106-1 advisory. It was discovered that Tomcat did not include the secure attribute for session cookies when using the RemoteIpFilter with request...

USN-7032-1: Tomcat vulnerability

It was discovered that Tomcat incorrectly handled HTTP trailer headers. A remote attacker could possibly use this issue to perform HTTP request smuggling...

Oracle Linux 9 : tomcat (ELSA-2024-1134)

The remote Oracle Linux 9 host has packages installed that are affected by a vulnerability as referenced in the ELSA-2024-1134 advisory. 1:9.0.62-37.el93.2 - Resolves: 2252050 HTTP request smuggling via malformed trailer headers CVE-2023-46589 Tenable has extracted the preceding description block...

BIT-TOMCAT-2023-45648 Apache Tomcat: Trailer header parsing too lenient

Improper Input Validation vulnerability in Apache Tomcat.Tomcat from 11.0.0 through 11.0.0, from 10.1.0 through 10.1.13, from 9.0.0 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 Tomcat to treat a...