cve-2026-49975-http2bomb_reproduction

CVE-2026-49975 HTTP/2 Bomb Complete Reproduction Guide Based on QiAnXin CERT Advisory + Calif Original Research ================================================================ I. Vulnerability Overview CVE-2026-49975 is a critical denial-of-service DoS vulnerability in HTTP/2 server and proxy...

CVE-2026-54425

Uncontrolled recursion in the HTTP/2 HPACK decoder in Apache bRPC before 1.18.0 allows remote attackers to cause denial of service by sending a crafted HTTP/2 header block containing many consecutive Dynamic Table Size Update entries. Each update was decoded by recursively invoking the HPACK...

CVE-2026-78048

Apache bRPC versions prior to 1.18.0 are vulnerable to a Remote Denial of Service (DoS) via a reachable-assertion flaw in the HPACK header-compression decoder of the HTTP/2 (h2/gRPC) stack. The root cause is located in src/brpc/details/hpack.cpp, where the IndexTable::Init function incorrectly as...

CVE-2026-78048 Apache bRPC: Remote Denial of Service via Out-of-Bounds Dynamic Table Sizing in HPACK Decoder

A reachable-assertion flaw in the HPACK header-compression decoder of the HTTP/2 h2/gRPC stack in Apache bRPC version = 1 byte + value = 1 byte + 32 bytes of overhead. However, RFC 7541 section 4.1 specifies that the minimum entry size is 33 bytes, because the value may be empty name = 1 byte +...

CVE-2026-54425

Apache bRPC versions before 1.18.0 are vulnerable to a denial of service (DoS) due to uncontrolled recursion (CWE-674) in the HTTP/2 HPACK decoder. An attacker can send a crafted HTTP/2 header block with many consecutive Dynamic Table Size Update entries, causing the decoder to exhaust the thread...

CVE-2026-54425 Apache bRPC: Stack Exhaustion via Recursive HPACK Dynamic Table Size Update Decoding

Uncontrolled recursion in the HTTP/2 HPACK decoder in Apache bRPC before 1.18.0 allows remote attackers to cause denial of service by sending a crafted HTTP/2 header block containing many consecutive Dynamic Table Size Update entries. Each update was decoded by recursively invoking the HPACK...

EUVD-2026-107169

Uncontrolled recursion in the HTTP/2 HPACK decoder in Apache bRPC before 1.18.0 allows remote attackers to cause denial of service by sending a crafted HTTP/2 header block containing many consecutive Dynamic Table Size Update entries. Each update was decoded by recursively invoking the HPACK...

PT-2026-120528

Uncontrolled recursion in the HTTP/2 HPACK decoder in Apache bRPC before 1.18.0 allows remote attackers to cause denial of service by sending a crafted HTTP/2 header block containing many consecutive Dynamic Table Size Update entries. Each update was decoded by recursively invoking the HPACK...

DoS (Denial of Service) org.apache.httpcomponents.core5:httpcore5-h2 Dependency in Bitbucket Data Center

This High severity DoS Denial of Service vulnerability was introduced in version 10.2.0 of Bitbucket Data Center. This DoS Denial of Service vulnerability, with a CVSS Score of 7.5 and a CVSS Vector of CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H allows an unauthenticated attacker to expose asset...

Astra Linux – Vulnerability in golang-golang-x-net, golang-1.19

A maliciously crafted HTTP/2 stream could cause excessive CPU consumption in the HPACK decoder, enough to trigger a denial of service due to a small number of small requests...

CLEANSTART-2026-SC69074 Allocation of resources without limits or throttling in the HTTP/2 HPACK decoder in Apache HttpComponents Core (5

Security vulnerability affects the apache-nifi package. Allocation of resources without limits or throttling in the HTTP/2 HPACK decoder in Apache HttpComponents Core 5...

CLEANSTART-2026-XZ10656 Allocation of resources without limits or throttling in the HTTP/2 HPACK decoder in Apache HttpComponents Core (5

Security vulnerability affects the sonarqube package. Allocation of resources without limits or throttling in the HTTP/2 HPACK decoder in Apache HttpComponents Core 5...

CLEANSTART-2026-GO38541 Allocation of resources without limits or throttling in the HTTP/2 HPACK decoder in Apache HttpComponents Core (5

Security vulnerability affects the apache-nifi package. Allocation of resources without limits or throttling in the HTTP/2 HPACK decoder in Apache HttpComponents Core 5...

AlmaLinux 9.2 [TuxCare] Security Update: containernetworking-plugins Multiple Vulnerabilities (ALMALINUX9.2:CLSA-2025:1762538558)

The AlmaLinux 9.2 host has a package installed that is affected by multiple vulnerabilities as referenced in the TuxCare ALMALINUX9.2:CLSA-2025:1762538558 advisory. - A maliciously crafted HTTP/2 stream could cause excessive CPU consumption in the HPACK decoder, sufficient to cause a denial of...

CLEANSTART-2026-MM56894 Allocation of resources without limits or throttling in the HTTP/2 HPACK decoder in Apache HttpComponents Core (5

Security vulnerability affects the sonarqube package. Allocation of resources without limits or throttling in the HTTP/2 HPACK decoder in Apache HttpComponents Core 5...

PT-2026-108469

Security vulnerability affects the sonarqube package. Allocation of resources without limits or throttling in the HTTP/2 HPACK decoder in Apache HttpComponents Core 5...

Security Bulletin: Denial of Service Security Vulnerability in Apache HttpComponents Core affects IBM Sterling B2B Integrator and IBM Sterling File Gateway (CVE-2026-54428)

Summary IBM Sterling B2B Integrator and IBM Sterling File Gateway have addressed the security vulnerability Vulnerability Details CVEID:CVE-2026-54428 DESCRIPTION: Allocation of resources without limits or throttling in the HTTP/2 HPACK decoder in Apache HttpComponents Core 5.4.2 and earlier,...

PT-2026-82110

Name of the Vulnerable Software and Affected Versions Http4s versions prior to 0.23.35 Http4s versions prior to 1.0.0-M47 Description An unauthenticated HTTP/2 peer can cause an out-of-memory denial of service in the Ember backend when HTTP/2 is enabled. The issue resides in the Hpack wrapper...

org.apache.httpcomponents.core5/httpcore5-h2: Apache HttpComponents Core: Denial of Service via oversized HTTP/2 HPACK header blocks

A flaw was found in Apache HttpComponents Core. This vulnerability, located in the HTTP/2 HPACK decoder, allows a remote attacker to cause a denial of service. By sending oversized compressed header blocks, an attacker can exhaust memory resources before the system's configured header list size...

Security Bulletin:Vulnerability in httpcore5 affects IBM Netezza Appliance

Summary The httpcore5 package is used by IBM Netezza Appliance. IBM Netezza Appliance has addressed the applicable CVEsCVE-2026-54428 Vulnerability Details CVEID:CVE-2026-54428 DESCRIPTION: Allocation of resources without limits or throttling in the HTTP/2 HPACK decoder in Apache HttpComponents...