CVE-2025-57804

h2 is a pure-Python implementation of a HTTP/2 protocol stack. Prior to version 4.3.0, an HTTP/2 request splitting vulnerability allows attackers to perform request smuggling attacks by injecting CRLF characters into headers. This occurs when servers downgrade HTTP/2 requests to HTTP/1.1 without...

CVE-2025-57804: Improper Neutralization of CRLF Sequences

h2 is a pure-Python implementation of a HTTP/2 protocol stack. Prior to version 4.3.0, an HTTP/2 request splitting vulnerability allows attackers to perform request smuggling attacks by injecting CRLF characters into headers. This occurs when servers downgrade HTTP/2 requests to HTTP/1.1 without...

PT-2025-36701

mitmproxy 12.1.1 and below embed python-hyper/h2 ≤ v4.2.0, which has a gap in its HTTP/2 header validation. This enables request smuggling attacks when mitmproxy is in a configuration where it translates HTTP/2 to HTTP/1. For example, this affects reverse proxies to http:// backends. It does not...

CVE-2025-5115

In Eclipse Jetty, versions =9.4.57, =10.0.25, =11.0.25, =12.0.21, =12.1.0.alpha2, an HTTP/2 client may trigger the server to send RSTSTREAM frames, for example by sending frames that are malformed or that should not be sent in a particular stream state, therefore forcing the server to consume...

Denial Of Service (DoS)

HTTP/2 implementations are vulnerable to Denial Of Service DoS. The vulnerability is due to incorrect accounting of client-triggered stream resets, which allows an attacker to rapidly open and reset streams while backend processing continues, causing an unbounded number of concurrent streams and...

CVE-2025-5115: Uncontrolled Resource Consumption

In Eclipse Jetty, versions =9.4.57, =10.0.25, =11.0.25, =12.0.21, =12.1.0.alpha2, an HTTP/2 client may trigger the server to send RSTSTREAM frames, for example by sending frames that are malformed or that should not be sent in a particular stream state, therefore forcing the server to consume...

CVE-2025-55163

Netty is an asynchronous, event-driven network application framework. Prior to versions 4.1.124.Final and 4.2.4.Final, Netty is vulnerable to MadeYouReset DDoS. This is a logical vulnerability in the HTTP/2 protocol, that uses malformed HTTP/2 control frames in order to break the max concurrent...

CVE-2025-8671

A mismatch caused by client-triggered server-sent stream resets between HTTP/2 specifications and the internal architectures of some HTTP/2 implementations may result in excessive server resource consumption leading to denial-of-service DoS. By opening streams and then rapidly triggering the serv...

CVE-2025-8671: Improper Resource Shutdown or Release

A mismatch caused by client-triggered server-sent stream resets between HTTP/2 specifications and the internal architectures of some HTTP/2 implementations may result in excessive server resource consumption leading to denial-of-service DoS. By opening streams and then rapidly triggering the serv...

CVE-2025-55163: Allocation of Resources Without Limits or Throttling

Netty is an asynchronous, event-driven network application framework. Prior to versions 4.1.124.Final and 4.2.4.Final, Netty is vulnerable to MadeYouReset DDoS. This is a logical vulnerability in the HTTP/2 protocol, that uses malformed HTTP/2 control frames in order to break the max concurrent...

CVE-2025-54500: Allocation of Resources Without Limits or Throttling

An HTTP/2 implementation flaw allows a denial-of-service DoS that uses malformed HTTP/2 control frames in order to break the max concurrent streams limit HTTP/2 MadeYouReset Attack. Note: Software versions which have reached End of Technical Support EoTS are not evaluated...

Linux Distros Unpatched Vulnerability : CVE-2024-7246

The Linux/Unix host has one or more packages installed that are impacted by a vulnerability without a vendor supplied patch available. - It's possible for a gRPC client communicating with a HTTP/2 proxy to poison the HPACK table between the proxy and the backend such that other clients see failed...

Linux Distros Unpatched Vulnerability : CVE-2023-45802

The Linux/Unix host has one or more packages installed that are impacted by a vulnerability without a vendor supplied patch available. - When a HTTP/2 stream was reset RST frame by a client, there was a time window were the request's memory resources were not reclaimed immediately. Instead,...

SUSE SLED15: apache2 / apache2-devel / apache2-event / apache2-manual / etc (SUSE-SU-2025:02684-1)

The remote SUSE Linux SLED15 / SLEDSAP15 / SLES15 / SLESSAP15 / openSUSE 15 host has packages installed that are affected by multiple vulnerabilities as referenced in the SUSE-SU-2025:02684-1 advisory. - CVE-2024-42516: Fixed HTTP response splitting. bsc1246477 - CVE-2024-43204: Fixed a SSRF when...

RockyLinux 8 : tomcat (RLSA-2025:11333)

The remote RockyLinux 8 host has packages installed that are affected by multiple vulnerabilities as referenced in the RLSA-2025:11333 advisory. tomcat: Incomplete fix for CVE-2024-50379 - RCE due to TOCTOU issue in JSP compilation CVE-2024-56337 tomcat: Apache Tomcat: DoS via malformed HTTP/2...

BIT-TOMCAT-2024-34750 Apache Tomcat: HTTP/2 excess header handling DoS

Improper Handling of Exceptional Conditions, Uncontrolled Resource Consumption vulnerability in Apache Tomcat. When processing an HTTP/2 stream, Tomcat did not handle some cases of excessive HTTP headers correctly. This led to a miscounting of active HTTP/2 streams which in turn led to the use of...

tomcat security update

An update is available for tomcat. This update affects Rocky Linux 8. A Common Vulnerability Scoring System CVSS base score, which gives a detailed severity rating, is available for each vulnerability from the CVE list Apache Tomcat is a servlet container for the Java Servlet and JavaServer Pages...

OESA-2025-1895 tomcat security update

Tomcat is the servlet container that is used in the official Reference Implementation for the Java Servlet and JavaServer Pages technologies. The Java Servlet and JavaServer Pages specifications are developed by Sun under the Java Community Process. Security Fixes: Concurrent Execution using Shar...

NewStart CGSL MAIN 7.02 : httpd Multiple Vulnerabilities (NS-SA-2025-0132)

The remote NewStart CGSL host, running version MAIN 7.02, has httpd packages installed that are affected by multiple vulnerabilities: - Vulnerability in core of Apache HTTP Server 2.4.59 and earlier are vulnerably to information disclosure, SSRF or local script execution via backend applications...

NewStart CGSL MAIN 7.02 : nghttp2 Multiple Vulnerabilities (NS-SA-2025-0134)

The remote NewStart CGSL host, running version MAIN 7.02, has nghttp2 packages installed that are affected by multiple vulnerabilities: - The HTTP/2 protocol allows a denial of service server resource consumption because request cancellation can reset many streams quickly, as exploited in the wil...