CVE-2026-49754 HTTP/2 CONTINUATION flood in Mint client via unbounded header-block accumulation

Allocation of Resources Without Limits or Throttling vulnerability in elixir-mint Mint allows attacker-controlled HTTP/2 servers to exhaust memory in a Mint client HTTP/2 CONTINUATION flood. When Mint's HTTP/2 receive path observes a HEADERS frame without the ENDHEADERS flag, the unparsed...

CVE-2026-49754

The CVE-2026-49754 entry describes a memory exhaustion vulnerability in elixir-mint Mint’s HTTP/2 receive path. When a HEADERS frame arrives without END_HEADERS, the unparsed header-block is queued and each subsequent CONTINUATION frame on that stream appends to the accumulator with no cap. There...

EUVD-2026-33940

Allocation of Resources Without Limits or Throttling vulnerability in elixir-mint Mint allows attacker-controlled HTTP/2 servers to exhaust memory in a Mint client HTTP/2 CONTINUATION flood. When Mint's HTTP/2 receive path observes a HEADERS frame without the ENDHEADERS flag, the unparsed...

CVE-2026-33871 Netty HTTP/2 CONTINUATION Frame Flood DoS via Zero-Byte Frame Bypass

Netty is an asynchronous, event-driven network application framework. In versions prior to 4.1.132.Final and 4.2.10.Final, a remote user can trigger a Denial of Service DoS against a Netty HTTP/2 server by sending a flood of CONTINUATION frames. The server's lack of a limit on the number of...

Mitigate Http/2 continuations with Imperva WAF

As the threat landscape continues to grow, with new breaches being announced every day, Imperva continues to stay one step ahead of attackers. HTTP/2 exploits seem to be growing every quarter as more attackers use this vulnerability in new ways. We previously wrote about how Imperva protected its...

Exploit for CVE-2024-27983

This repository builds up a vulnerable HTTP2 Node.js server se...

Exploit for CVE-2023-45288

PoC for CVE-2023-45288 This is a proof-of-concept code for th...

HTTP/2 CONTINUATION flood in net/http

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GHSA-Q6CP-QFWQ-4GCV h2 servers vulnerable to degradation of service with CONTINUATION Flood

An attacker can send a flood of CONTINUATION frames, causing h2 to process them indefinitely. This results in an increase in CPU usage. Tokio task budget helps prevent this from a complete denial-of-service, as the server can still respond to legitimate requests, albeit with increased latency. Mo...

h2 servers vulnerable to degradation of service with CONTINUATION Flood

An attacker can send a flood of CONTINUATION frames, causing h2 to process them indefinitely. This results in an increase in CPU usage. Tokio task budget helps prevent this from a complete denial-of-service, as the server can still respond to legitimate requests, albeit with increased latency. Mo...

HTTP/2 CONTINUATION Flood Vulnerability

HTTP/2, a widely adopted web communication protocol, organizes data transmission through a binary framing layer, wherein all communication is divided into smaller messages called frames, each identified by a specific type, such as headers, data, and continuation frames. HTTP/2 HEADER frames...

RUSTSEC-2024-0332 Degradation of service in h2 servers with CONTINUATION Flood

An attacker can send a flood of CONTINUATION frames, causing h2 to process them indefinitely. This results in an increase in CPU usage. Tokio task budget helps prevent this from a complete denial-of-service, as the server can still respond to legitimate requests, albeit with increased latency. Mo...

Degradation of service in h2 servers with CONTINUATION Flood

An attacker can send a flood of CONTINUATION frames, causing h2 to process them indefinitely. This results in an increase in CPU usage. Tokio task budget helps prevent this from a complete denial-of-service, as the server can still respond to legitimate requests, albeit with increased latency. Mo...

PT-2024-2652 · Envoy +1 · Envoy +1

Name of the Vulnerable Software and Affected Versions: Envoy versions 1.29.0 through 1.29.1 Description: The issue is related to the Envoy HTTP/2 protocol stack, which is vulnerable to a flood of CONTINUATION frames. This occurs because Envoy's HTTP/2 codec does not reset a request when header ma...

PT-2024-2651 · Envoy · Envoy

Name of the Vulnerable Software and Affected Versions: Envoy versions prior to 1.29.3 Envoy versions prior to 1.28.2 Envoy versions prior to 1.27.4 Envoy versions prior to 1.26.8 Description: The HTTP/2 protocol stack in Envoy is vulnerable to CPU exhaustion due to a flood of CONTINUATION frames...