curl: Incomplete Suppression of Transfer-Encoding: chunked Header in HTTP/2 After Redirect From HTTP/1.1

When curl send a request with Transfer-Encoding: chunked using HTTP/1.1, and follows a redirect to an HTTP/2 endpoint, the uploadchunky flag is not properly reset. As a result, the Transfer-Encoding: chunked header is sent in the subsequent request even when HTTP/2 is negotiated/used. This violat...

CLEANSTART-2026-VG07087 In Eclipse Jetty, the HTTP/1

Multiple security vulnerabilities affect the apache-zookeeper package. In Eclipse Jetty, the HTTP/1. See references for individual vulnerability details...

ALSA-2026:25057 Important: 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: HTTP/2: Remote Denial of Service via compression bomb and Slowloris-style attack CVE-2026-49975 For more details about the security issues, including the impact, a...

USN-8398-2 nginx regression

USN-8398-1 fixed a vulnerability in nginx. The update introduced a regression causing nginx to crash when being used with external modules. This update reverts the fix for CVE-2026-49975 pending further investigation. We apologize for the inconvenience. Original advisory details: It was discovere...

SUSE-SU-2026:2314-1 Security update for libsoup

This update for libsoup fixes the following issues - CVE-2026-1801: HTTP Request Smuggling in soupfilterinputstreamreadline bsc1257649. - CVE-2026-4271: use-after-free in the HTTP/2 server when user signal handlers disconnect connections during callback execution bsc1259767...

Allocation of Resources Without Limits or Throttling

Overview io.netty:netty-codec-http2 is a HTTP2 sub package for the netty library, an event-driven asynchronous network application framework. Affected versions of this package are vulnerable to Allocation of Resources Without Limits or Throttling due to the lack of enforcement of the advertised...

Gun security vulnerabilities

Gun is an open-source Erlang HTTP client developed by Nine Nines, supporting HTTP/1.1, HTTP/2, and WebSocket. Versions of Gun from 1.0.0 to 2.4.0 contained security vulnerabilities. These vulnerabilities stemmed from uncontrolled resource consumption in the gunhttp module, which could allow...

[SECURITY] [DLA 4620-1] apache2 security update

------------------------------------------------------------------------- Debian LTS Advisory DLA-4620-1 [email protected] https://www.debian.org/lts/security/ Bastien Roucariès June 07, 2026 https://wiki.debian.org/LTS -...

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...

PT-2026-48688

Name of the Vulnerable Software and Affected Versions netty-codec-http2 versions prior to 4.1.135.Final netty-codec-http2 versions prior to 4.2.15.Final Description The DelegatingDecompressorFrameListener class manages HTTP/2 decompression by using a per-stream EmbeddedChannel to run decompressio...

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...

PT-2026-45786

Name of the Vulnerable Software and Affected Versions mint versions 0.1.0 through 1.8.x Description An inconsistent interpretation of HTTP requests, known as HTTP Request/Response Smuggling, allows attacker-controlled HTTP/1 servers to desynchronize response framing on shared connections. The iss...

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...