CVE-2026-32665

In NLnet Labs Unbound 1.22.0 up to and including 1.25.1, when downstream DNS-over-QUIC DoQ is enabled, the first two bidirectional streams on a new QUIC connection streamid 0 and 4 bypass the per-stream 'quic-size' gate entirely, and large input buffers are allocated later, after only the 2-byte...

EUVD-2026-41497

A use-after-free vulnerability exists in libcurl when an application configures an HTTP/2 stream-dependency tree via CURLOPTSTREAMDEPENDS or CURLOPTSTREAMDEPENDSE, subsequently invokes curleasyreset, and finally terminates the handle with curleasycleanup. During this final cleanup phase, libcurl...

Apache Tomcat: Request header mix-up between HTTP/2 streams

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MGASA-2025-0223 Updated tomcat packages fix vulnerabilities

APR/Native Connector crash leading to DoS. CVE-2025-52434 DoS via integer overflow in multipart file upload. CVE-2025-52520 DoS via excessive h2 streams at connection start. CVE-2025-53506 H2 DoS - Made You Reset. CVE-2025-48989...

GHSA-25XR-QJ8W-C4VF Apache Tomcat Coyote vulnerable to Denial of Service via excessive HTTP/2 streams

Uncontrolled Resource Consumption vulnerability in Apache Tomcat if an HTTP/2 client did not acknowledge the initial settings frame that reduces the maximum permitted concurrent streams. This issue affects Apache Tomcat: from 11.0.0-M1 through 11.0.8, from 10.1.0-M1 through 10.1.42, from 9.0.0.M1...

USN-7067-1 haproxy vulnerability

It was discovered that HAProxy did not properly limit the creation of new HTTP/2 streams. A remote attacker could possibly use this issue to cause HAProxy to consume excessive resources, leading to a denial of service...

tomcat: Improper Handling of Exceptional Conditions

A vulnerability was found in Apache Tomcat. When processing an HTTP/2 stream, Tomcat did not handle some cases of excessive HTTP headers correctly. This issue led to a miscounting of active HTTP/2 streams, which in turn led to using an incorrect infinite timeout that allowed connections to remain...

Important: tomcat9

Issue Overview: 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 l...

SUSE CVE-2021-32778

Envoy is an open source L7 proxy and communication bus designed for large modern service oriented architectures. In affected versions envoy's procedure for resetting a HTTP/2 stream has ON^2 complexity, leading to high CPU utilization when a large number of streams are reset. Deployments are...

OESA-2024-1530 ignition security update

Ignition is a utility used to manipulate systems during the initramfs. This includes partitioning disks, formatting partitions, writing files regular files, systemd units, etc., and configuring users. On first boot, Ignition reads its configuration from a source of truth remote URL, network...

OESA-2024-1407 cri-o security update

Open Container Initiative-based implementation of Kubernetes Container Runtime Interface. Security Fixes: A maliciously crafted HTTP/2 stream could cause excessive CPU consumption in the HPACK decoder, sufficient to cause a denial of service from a small number of small requests.CVE-2022-41723 A...

OESA-2024-1380 cri-tools security update

CLI and validation tools for Container Runtime Interface Security Fixes: A maliciously crafted HTTP/2 stream could cause excessive CPU consumption in the HPACK decoder, sufficient to cause a denial of service from a small number of small requests.CVE-2022-41723 A malicious HTTP/2 client which...

OESA-2024-1139 containerd security update

containerd is an industry-standard container runtime with an emphasis on simplicity, robustness and portability. It is available as a daemon for Linux and Windows, which can manage the complete container lifecycle of its host system: image transfer and storage, container execution and supervision...

golang: net/http, x/net/http2: rapid stream resets can cause excessive work (CVE-2023-44487)

A flaw was found in handling multiplexed streams in the HTTP/2 protocol. A client can repeatedly make a request for a new multiplex stream and immediately send an RSTSTREAM frame to cancel it. This creates extra work for the server setting up and tearing down the streams while not hitting any...

PT-2023-6292

Name of the Vulnerable Software and Affected Versions Apache HTTP Server versions prior to 2.4.58 Description The issue is related to the handling of HTTP/2 streams in the Apache HTTP Server. When a client resets an HTTP/2 stream using an RST frame, there is a time window where the request's memo...

Allocation of Resources Without Limits or Throttling

Overview std/net/http is a Go standard library package std/net/http Affected versions of this package are vulnerable to Allocation of Resources Without Limits or Throttling. Go Vulnerability Report: A maliciously crafted HTTP/2 stream could cause excessive CPU consumption in the HPACK decoder,...

GHSA-VVW4-RFWF-P6HX Exposure of Sensitive Information to an Unauthorized Actor in Apache Tomcat

While investigating bug 64830 it was discovered that Apache Tomcat 10.0.0-M1 to 10.0.0-M9, 9.0.0-M1 to 9.0.39 and 8.5.0 to 8.5.59 could re-use an HTTP request header value from the previous stream received on an HTTP/2 connection for the request associated with the subsequent stream. While this...

nodejs: Use-after-free on close http2 on stream canceling

A flaw was found in Node.js, where it is vulnerable to a use-after-free attack. This flaw allows an attacker to exploit memory corruption to change process behavior. The highest threat from this vulnerability is to confidentiality and integrity...

nodejs: Use-after-free on close http2 on stream canceling

A flaw was found in Node.js, where it is vulnerable to a use-after-free attack. This flaw allows an attacker to exploit the memory corruption, which causes a change in the process behavior. The highest threat from this vulnerability is to confidentiality and integrity...

PT-2021-22456 · Pomerium +1 · Pomerium +1

Name of the Vulnerable Software and Affected Versions: Pomerium versions prior to 0.14.8 Pomerium versions prior to 0.15.1 Description: The issue arises from Envoy, which Pomerium is based on, incorrectly handling resetting of HTTP/2 streams with excessive complexity. This can lead to high CPU...