CVE-2026-49975

A flaw was found in HTTP/2, affecting various web servers. A remote attacker can exploit this vulnerability by combining an HPACK compression bomb with a zero-byte flow-control window. This technique allows a small amount of data to expand into large memory allocations on the server, which are th...

SUSE-SU-2026:2280-1 Security update for ignition

This update for ignition fixes the following issue - CVE-2026-33814: golang.org/x/net/http2: infinite loop in HTTP/2 transport when given bad SETTINGSMAXFRAMESIZE bsc1265751...

Suricata < 7.0.16 / 8.x < 8.0.5 Multiple Vulnerabilities

The version of OISF Suricata installed on the remote host is prior to 7.0.16 or 8.x prior to 8.0.5. It is, therefore, affected by multiple vulnerabilities, including: - A protocol change while processing HTTP/2 traffic could lead to type confusion in Suricata. Crafted traffic may cause Suricata t...

SUSE CVE-2026-50052

In Vinyl Cache before 9.0.1 and Varnish Cache before 9.0.3, a deficiency in HTTP/2 request parsing can be exploited to launch a backend request desync attack request smuggling, which in turn can be used for cache poisoning, authentication bypass, or possibly even information disclosure and...

mod_http2: Apache HTTP Server: HTTP/2 DoS by Memory Increase

A flaw was found in Apache HTTP Server. This late release of memory after effective lifetime vulnerability allows a remote, unauthenticated attacker to cause a denial of service DoS. The vulnerability can lead to resource exhaustion, making the server unavailable to legitimate users...

PT-2026-45903

Name of the Vulnerable Software and Affected Versions Vinyl Cache versions prior to 9.0.1 Varnish Cache versions prior to 9.0.3 Description A deficiency in HTTP/2 request parsing allows for a backend request desync attack, also known as request smuggling. This issue can lead to cache poisoning,...

CVE-2026-48862

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 via PUSHPROMISE flooding. In lib/mint/http2.ex, Mint.HTTP2.decodepushpromiseheadersandaddresponse/5 inserts a :reservedremote entry...

ALSA-2026:22551 Moderate: mod_http2 security update

The modh2 Apache httpd module implements the HTTP2 protocol h2+h2c on top of libnghttp2 for httpd 2.4 servers. Security Fixes: httpd: Apache HTTP Server: HTTP/2 DoS by Memory Increase CVE-2025-53020 For more details about the security issues, including the impact, a CVSS score, acknowledgments, a...

Important: docker

Issue Overview: When using LookupCNAME with the cgo DNS resolver, a very long CNAME response can trigger a double-free of C memory and a crash. CVE-2026-33811 When processing HTTP/2 SETTINGS frames, transport will enter an infinite loop of writing CONTINUATION frames if it receives a...

Important: docker

Issue Overview: When using LookupCNAME with the cgo DNS resolver, a very long CNAME response can trigger a double-free of C memory and a crash. CVE-2026-33811 When processing HTTP/2 SETTINGS frames, transport will enter an infinite loop of writing CONTINUATION frames if it receives a...

Important: containerd

Issue Overview: When using LookupCNAME with the cgo DNS resolver, a very long CNAME response can trigger a double-free of C memory and a crash. CVE-2026-33811 When processing HTTP/2 SETTINGS frames, transport will enter an infinite loop of writing CONTINUATION frames if it receives a...

Important: containerd

Issue Overview: When using LookupCNAME with the cgo DNS resolver, a very long CNAME response can trigger a double-free of C memory and a crash. CVE-2026-33811 When processing HTTP/2 SETTINGS frames, transport will enter an infinite loop of writing CONTINUATION frames if it receives a...

Astra Linux – Vulnerability in Jetty9

In Eclipse Jetty, versions =9.4.57, =10.0.25, =11.0.25, =12.0.21, and =12.1.0alpha2, an HTTP/2 client may trigger the server to send RSTSTREAM frames. This can happen by sending frames that are malformed or should not be sent under certain stream conditions, thereby forcing the server to consume...

Astra Linux – Vulnerability in Firefox and Thunderbird

A use-after-free might have occurred when an HTTP2 session object was released on a different thread, resulting in memory corruption and potentially exploitable crashes. This vulnerability affects Firefox 93, Thunderbird 91.3, and Firefox ESR 91.3...

CVE-2026-42926

When NGINX Open Source is configured to proxy HTTP/2 traffic by setting proxyhttpversion to 2, and also uses proxysetbody, an attacker may be able to inject frame headers and payload bytes to the upstream peer. Note: Software versions which have reached End of Technical Support EoTS are not...

F5 NGINX Open Source 安全漏洞

F5 NGINX Open Source is a high-performance web server, reverse proxy server, load balancer, and API gateway provided by the F5 company. There is a security vulnerability in F5 NGINX Open Source, which stems from the use of proxysetbody when configuring HTTP/2 traffic. This vulnerability may lead ...

F5 BIG-IP 安全漏洞

F5 BIG-IP is an application delivery platform developed by F5 Technologies in the United States. It integrates functions such as network traffic management, application security management, and load balancing. There is a security vulnerability in F5 BIG-IP. This vulnerability arises from HTTP/2...

nginx-devel -- multiple vulnerabilities

The nginx project reports: nginx 1.31.0 fixes multiple security issues affecting HTTP/2 proxying, rewrite handling, SCGI/uWSGI response handling, charset conversion, HTTP/3 connection migration, and OCSP resolver response processing...

Improper Validation of Syntactic Correctness of Input

Overview org.apache.tomcat:coyote is a maven plugin for Tomcat Connectors and HTTP parser. Affected versions of this package are vulnerable to Improper Validation of Syntactic Correctness of Input in the processing of HTTP/2 request headers. An attacker can cause unexpected behavior or potentiall...

Moderate: Red Hat Security Advisory: libsoup3 security update

An update for libsoup3 is now available for Red Hat Enterprise Linux 10. Red Hat Product Security has rated this update as having a security impact of Moderate. A Common Vulnerability Scoring System CVSS base score, which gives a detailed severity rating, is available for each vulnerability from...