CVE-2026-54428

The CVE concerns Apache HttpComponents Core HPACK decoder: on HTTP/2, the HPACK decoder may allocate resources without limits or throttling, allowing a remote attacker to cause memory exhaustion and denial of service. Affected versions are 5.4.2 and earlier, and 5.5-beta1 and earlier. The issue o...

Denial Of Service (DoS)

Netty is vulnerable to Denial of Service DoS. The vulnerability is due to improper handling of HTTP/2 SETTINGSMAXHEADERLISTSIZE values, which allows an attacker to trigger repeated request processing and response-header generation failures, leading to resource exhaustion similar to an HTTP/2 Rapi...

EUVD-2026-36471

Netty susceptible to HTTP/2 Reset Attack with different on-the-wire signature...

GHSA-563Q-J3CM-6JXM Netty susceptible to HTTP/2 Reset Attack with different on-the-wire signature

Summary Netty HTTP/2 max header size handling produces attack similar to HTTP/2 Rapid Reset. Details There is a setting in the http2 specification called SETTINGSMAXHEADERLISTSIZE. According to the RFC: “This advisory setting informs a peer of the maximum field section size that the sender is...

Netty susceptible to HTTP/2 Reset Attack with different on-the-wire signature

Summary Netty HTTP/2 max header size handling produces attack similar to HTTP/2 Rapid Reset. Details There is a setting in the http2 specification called SETTINGSMAXHEADERLISTSIZE. According to the RFC: “This advisory setting informs a peer of the maximum field section size that the sender is...

CVE-2026-50560 Netty susceptible to HTTP/2 Reset Attack with different on-the-wire signature

Netty is a network application framework for development of protocol servers and clients. Prior to versions 4.1.135.Final and 4.2.15.Final, Netty HTTP/2 max header size handling produces an attack similar to HTTP/2 Rapid Reset. There is a setting in the http2 specification called...

PT-2026-48916

Name of the Vulnerable Software and Affected Versions Netty versions prior to 4.1.135.Final Netty versions prior to 4.2.15.Final Description Netty HTTP/2 max header size handling allows for an attack similar to HTTP/2 Rapid Reset. When a client sends the SETTINGS MAX HEADER LIST SIZE setting, the...

CVE-2026-47774

A denial-of-service vulnerability was found in Envoy's HTTP/2 HPACK header compression implementation. A remote attacker could send a specially crafted HTTP/2 request that triggers disproportionately large memory allocations on the server, leading to resource exhaustion and denial of service...

SUSE-SU-2026:2306-1 Security update for perl-Protocol-HTTP2

This update for perl-Protocol-HTTP2 fixes the following issue - CVE-2026-10725: denial of service due to absence of inbound HPACK header-list size limit HTTP/2 Bomb attack bsc1267857...

SUSE CVE-2026-10725

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

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 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

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-2026-10725

Protocol::HTTP2 for Perl (versions up to 1.12) is vulnerable to an HTTP/2 Bomb. The inbound HPACK path lacks a header-list size limit; headers_decode materialises a full key+value copy per indexed reference with no running size check, and stream_header_block_add appends every CONTINUATION frame u...

PT-2026-47148

Name of the Vulnerable Software and Affected Versions Protocol::HTTP2 versions prior to 1.13 Description The software is susceptible to an HTTP/2 Bomb, where a small request can expand into large server memory consumption. This occurs because the inbound HPACK path lacks a header-list size limit...

JLSEC-2026-20

Hyperium Hyper before 0.14.19 does not allow for customization of the maxheaderlistsize method in the H2 third-party software, allowing attackers to perform HTTP2 attacks...

curl: Use-After-Free in curl_easy_nextheader when reusing header handle across requests

. The API returns struct curlheader objects that internally reference libcurl-owned linked list nodes. When a new request is performed on the same CURL handle, libcurl frees and rebuilds the internal header list, but previously returned struct curlheader objects remain valid to the application an...

CVE-2022-31394

Hyperium Hyper before 0.14.19 does not allow for customization of the maxheaderlistsize method in the H2 third-party software, allowing attackers to perform HTTP2 attacks...

Security Bulletin: Jetty HTTP/2 Unvalidated SETTINGS_MAX_HEADER_LIST_SIZE Leads to Out-of-Memory DoS , affects watsonx.data

Summary In Eclipse Jetty versions 12.0.0 to 12.0.16 included, an HTTP/2 client can specify a very large value for the HTTP/2 settings parameter SETTINGSMAXHEADERLISTSIZE. The Jetty HTTP/2 server does not perform validation on this setting, and tries to allocate a ByteBuffer of the specified...

Linux Distros Unpatched Vulnerability : CVE-2025-1948

The Linux/Unix host has one or more packages installed that are impacted by a vulnerability without a vendor supplied patch available. - In Eclipse Jetty versions 12.0.0 to 12.0.16 included, an HTTP/2 client can specify a very large value for the HTTP/2 settings parameter SETTINGSMAXHEADERLISTSIZ...