CVE-2026-56853 Apply ReadHeaderTimeout when doing unencrypted HTTP/2 check in net/http

When a server is configured to support unencrypted HTTP/2, it reads a few bytes from each new connection to see if they contain the HTTP/2 client preface. ReadHeaderTimeout is unexpectedly not being applied when doing this...

H2O Vulnerable to Denial of Service (DoS) via `HEAD` Request

A vulnerability in the typeahead endpoint of h2oai/h2o-3 version 3.46.0 allows for a denial of service. The endpoint performs a HEAD request to verify the existence of a specified resource without setting a timeout. An attacker can exploit this by sending multiple requests to an attacker-controll...

EUVD-2026-19651

Gotenberg Vulnerable to ReDoS via extraHttpHeaders scope feature...

Chall-Manager's HTTP Gateway is vulnerable to DoS due to missing header timeout

Impact The HTTP Gateway processes headers, but with no timeout set. With a Slowloris attack, an attacker could cause Denial of Service DoS. Exploitation does not require authentication nor authorization, so anyone can exploit it. It should nonetheless not be exploitable as it is highly recommende...

H2O 安全漏洞

H2O is an in-memory platform for distributed, scalable machine learning open-sourced by H2O.ai. A security vulnerability exists in H2O version 3.46.0, which stems from a typeahead endpoint that does not set a timeout when verifying the presence of a specified resource, which could allow an attack...

netty: SniHandler 16MB allocation leads to OOM

A flaw was found in Netty's SniHandler while navigating TLS handshake which may permit a large heap allocation if the handler did not have a timeout configured. This issue may allow an attacker to send a client hello packet which would cause the server to buffer large amounts of data per...

CVE-2021-22139

Kibana versions before 7.12.1 contain a denial of service vulnerability was found in the webhook actions due to a lack of timeout or a limit on the request size. An attacker with permissions to create webhook actions could drain the Kibana host connection pool, making Kibana unavailable for all...

rubygem-openshift-origin-node: cron.daily/cron.weekly denial of service

Ruby gem openshift-origin-node before 2014-02-14 does not contain a cronjob timeout which could result in a denial of service in cron.daily and cron.weekly...