Netty HTTP/2: Advertised MAX_CONCURRENT_STREAMS are not enforced

Impact DefaultHttp2Connection.DefaultEndpoint initialises maxActiveStreams/maxStreams to Integer.MAXVALUE, and Http2Settings never inserts SETTINGSMAXCONCURRENTSTREAMS by default Http2Settings.java:305-307 only clamps a user-supplied value. Unless the application explicitly calls...

CVE-2026-48913

Use After Free vulnerability in Apache HTTP Server module modhttp2 when file handles are already exhausted. This issue affects Apache HTTP Server: from 2.4.55 through 2.4.67...

CVE-2026-48913

Use After Free vulnerability in Apache HTTP Server module modhttp2 when file handles are already exhausted. This issue affects Apache HTTP Server: from 2.4.55 through 2.4.67...

CVE-2026-43972 gun HTTP/2 PUSH_PROMISE authority not validated against connection origin allows cross-origin cookie injection

Origin Validation Error vulnerability in ninenines gun gunhttp2 module allows cross-origin cookie injection via unvalidated HTTP/2 PUSHPROMISE authority. In gunhttp2:pushpromiseframe/7, the :authority pseudo-header from an incoming PUSHPROMISE frame is stored verbatim into the promised stream...

OPENSUSE-SU-2026:20921-1 Security update for elemental-toolkit

This update for elemental-toolkit fixes the following issue - CVE-2026-33186: google.golang.org/grpc: authorization bypass due to improper validation of the HTTP/2: path pseudo- header bsc1260277. Changes: - Update to v2.3.4: 974af043 Bump golang.org/x/net to v0.55.0 bsc1267168 bsc1251679 ae39c90...

USN-8398-1: nginx vulnerability

It was discovered that nginx incorrectly handled certain cookie headers in the HTTP/2 implementation. A remote attacker could possibly use this issue to cause nginx to consume excessive resources, resulting in a denial of service...

USN-8398-1 nginx vulnerability

It was discovered that nginx incorrectly handled certain cookie headers in the HTTP/2 implementation. A remote attacker could possibly use this issue to cause nginx to consume excessive resources, resulting in a denial of service...

Important: amazon-ssm-agent

Issue Overview: When processing HTTP/2 SETTINGS frames, transport will enter an infinite loop of writing CONTINUATION frames if it receives a SETTINGSMAXFRAMESIZE with a value of 0. CVE-2026-33814 Affected Packages: amazon-ssm-agent Issue Correction: Run dnf update amazon-ssm-agent --releasever...

PT-2026-47594

It was discovered that nginx incorrectly handled certain cookie headers in the HTTP/2 implementation. A remote attacker could possibly use this issue to cause nginx to consume excessive resources, resulting in a denial of service...

Important: ecs-init

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...

Apache 2.4.x < 2.4.68 Multiple Vulnerabilities

The version of Apache httpd installed on the remote host is prior to 2.4.68. It is, therefore, affected by multiple vulnerabilities as referenced in the 2.4.68 advisory. - CVE-2026-49975, also known as HTTP/2 Bomb, is a remote denial-of-service exploit against most major web servers, including:...

Amazon Linux 2023 : ecs-init (ALAS2023-2026-1771)

It is, therefore, affected by multiple vulnerabilities as referenced in the ALAS2023-2026-1771 advisory. 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...

Debian dla-4620 : apache2 - security update

The remote Debian 11 host has packages installed that are affected by a vulnerability as referenced in the dla-4620 advisory. - ------------------------------------------------------------------------- Debian LTS Advisory DLA-4620-1 [email protected] https://www.debian.org/lts/security/...

[SECURITY] [DSA 6323-1] apache2 security update

------------------------------------------------------------------------- Debian Security Advisory DSA-6323-1 [email protected] https://www.debian.org/security/ Salvatore Bonaccorso June 06, 2026 https://www.debian.org/security/faq -...

CVE-2026-10725 Protocol::HTTP2 versions before 1.13 for Perl is vulnerable to a HTTP/2 Bomb

Protocol::HTTP2 versions before 1.13 for Perl is vulnerable to a HTTP/2 Bomb. Protocol::HTTP2's inbound HPACK path has no header-list size limit, so a small HTTP/2 request can expand into large server memory the "HTTP/2 bomb". The headersdecode method materialises a full key+value copy per indexe...

CVE-2026-10725

The Protocol::HTTP2 Perl module (versions before 1.13 ) is vulnerable to an HTTP/2 Bomb attack. The root cause is that the inbound HPACK path lacks a header-list size limit, allowing a small HTTP/2 request to expand into large amounts of server memory. Specifically, the headers_decode method crea...

CVE-2026-10725

Protocol::HTTP2 versions through 1.12 for Perl is vulnerable to a HTTP/2 Bomb. Protocol::HTTP2's inbound HPACK path has no header-list size limit, so a small HTTP/2 request can expand into large server memory the "HTTP/2 bomb". The headersdecode method materialises a full key+value copy per index...

CVE-2026-41227

On an HTTP/2 virtual server with Layer 7 DoS Protection configured, undisclosed traffic can result in an increase in memory consumption causing the Traffic Management Microkernel TMM process to terminate. Note: Software versions which have reached End of Technical Support EoTS are not evaluated...

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...

CVE-2026-41293

Apache Tomcat did not validate HTTP/2 request headers, triggering unexpected application behavior, as applications may presume that header values exposed through the Servlet API would be valid...