CVE-2026-23918

CVE-2026-23918: Apache HTTP/2 Double-Free DoS CVE-2026-23918 | Apache HTTP Server 2.4.66 | CWE-415: Double Free | CVSS 8.8 | Fixed in 2.4.67 A double-free vulnerability in modhttp2 h2mplx.c allows remote attackers to cause a denial of service worker crash via rapid RSTSTREAM frames that trigger a...

CVE-2026-23918

CVE-2026-23918 Double-free in Apache httpd modhttp2 stream cleanup leading to pre-auth RCE. Affected: httpd 2.4.66 with modhttp2 and multi-threaded MPM event/worker. Fixed in: 2.4.67. Found and reported by Bartlomiej Dmitruk striga.ai and Stanislaw Strzalkowski isec.pl. Writeup:...

CVE-2026-23918-Double-free-Apache-httpd-mod_http2

CVE-2026-23918 - Apache httpd modhttp2 PoC This repository contains a proof-of-concept implementation written in Go for a pre-authentication memory corruption scenario affecting Apache httpd with modhttp2. The code in this repository demonstrates a spray-and-trigger approach against a vulnerable...

CVE-2026-23918

CVE-2026-23918 Apache modhttp2 Double-Free Detector https://github.com/user-attachments/assets/d6c30e58-548c-4b6d-9ba3-baa667238a58 root@kitploit: python3 h2ghost.py -h usage: h2ghost.py -h --host HOST --port PORT --tls --no-tls --iterations ITERATIONS --burst-n BURSTN --timeout TIMEOUT...

Detections-CVE-2026-23918

MOVING TO: https://github.com/insomnisec/publiccvedetections FOR BETTER LONG TERM MANAGEMENT OF DETECTION PUBLICATIONS THIS REPO WILL BE REMOVED IN JUNE 2026 PLEASE USE THE OTHER REPO GOING FORWARD CVE-2026-23918 "Apache HTTP/2 Double-Free" — Detection & Response Package Published: 2026-05-04...

CVE-2026-23918-Apache-H2-PoC

CVE-2026-23918-Apache-H2-PoC This is a proof-of-concept exploit for the double-free vulnerability in Apache's modhttp2 CVE-2026-23918. It's a nasty bug that hits the h2mplx.c stream cleanup path. Basically, if you time it right, you can get the server to try and clean up the same stream twice,...

CVE-2026-23918-test

CVE-2026-23918-test This repository contains a Proof of Concept PoC demonstrating the Double Free vulnerability CVE-2026-23918 in Apache HTTP Server 2.4.66 modhttp2. The vulnerability stems from a race condition during early RSTSTREAM frame processing. I focused on the timing window where the...

CVE-2026-23918-poc

CVE-2026-23918 — Apache modhttp2 Double Free Afectado: Apache HTTP Server 2.4.66 con modhttp2 + Event MPM Corregido en: Apache 2.4.67 modh2 v2.0.37 CVSS 3.1: 8.8 ALTA — Posible ejecución remota de código no autenticado CWE: CWE-415 Double Free ¿Cuál es la vulnerabilidad modhttp2 en Apache 2.4.66...

http2-bomb

HTTP/2 Bomb - CVE-2026-49975 A denial-of-service DoS proof of concept targeting HTTP/2 servers. By combining HPACK amplification with stream retention, a single machine with a modest network connection can render a vulnerable server unavailable within seconds. Vulnerability CVE: CVE-2026-49975...

MiracleLinux 9 : mod_http2-2.0.26-6.el9_8.2 (AXSA:2026-1693:03)

The remote MiracleLinux 9 host has a package installed that is affected by multiple vulnerabilities as referenced in the AXSA:2026-1693:03 advisory. httpd: modhttp2: Apache HTTP Server modhttp2: Use After Free vulnerability allows arbitrary code execution or denial of service. CVE-2026-48913 http...

mod_http2 security, bug fix, and enhancement update

An update is available for modhttp2. This update affects Rocky Linux 9. A Common Vulnerability Scoring System CVSS base score, which gives a detailed severity rating, is available for each vulnerability from the CVE list The modh2 Apache httpd module implements the HTTP2 protocol h2+h2c on top of...

RLSA-2026:59387 Moderate: mod_http2 security, bug fix, and enhancement update

The modh2 Apache httpd module implements the HTTP2 protocol h2+h2c on top of libnghttp2 for httpd 2.4 servers. Security Fixes: httpd: modhttp2: Apache HTTP Server modhttp2: Use After Free vulnerability allows arbitrary code execution or denial of service. CVE-2026-48913 httpd: Apache HTTP Server:...

RHSA-2026:59387 Red Hat Security Advisory: mod_http2 security, bug fix, and enhancement update

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RockyLinux 9 : mod_http2 (RLSA-2026:59387)

The remote RockyLinux 9 host has packages installed that are affected by multiple vulnerabilities as referenced in the RLSA-2026:59387 advisory. httpd: modhttp2: Apache HTTP Server modhttp2: Use After Free vulnerability allows arbitrary code execution or denial of service. CVE-2026-48913 httpd:...

AlmaLinux 9 : mod_http2 (ALSA-2026:59387)

The remote AlmaLinux 9 host has a package installed that is affected by multiple vulnerabilities as referenced in the ALSA-2026:59387 advisory. httpd: modhttp2: Apache HTTP Server modhttp2: Use After Free vulnerability allows arbitrary code execution or denial of service. CVE-2026-48913 httpd:...

Oracle Linux 9 : mod_http2 (ELSA-2026-59387)

The remote Oracle Linux 9 host has a package installed that is affected by multiple vulnerabilities as referenced in the ELSA-2026-59387 advisory. 2.0.26-6.2 - Resolves: RHEL-190583 - address CVE-2026-43951 and CVE-2026-48913 in modhttp2 Tenable has extracted the preceding description block...

httpd: mod_http2: Apache HTTP Server mod_http2: Use After Free vulnerability allows arbitrary code execution or denial of service.

A flaw was found in the Apache HTTP Server's modhttp2 module. This vulnerability, known as a Use After Free, occurs when the server's file handles are exhausted. An attacker could potentially exploit this to cause a denial of service or, in some cases, execute arbitrary code, leading to system...

Moderate: Red Hat Security Advisory: mod_http2 security, bug fix, and enhancement update

An update for modhttp2 is now available for Red Hat Enterprise Linux 9. 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 t...

mod_http2 security, bug fix, and enhancement update

2.0.26-6.2 - Resolves: RHEL-190583 - address CVE-2026-43951 and CVE-2026-48913 in modhttp2...

RHEL 9 : mod_http2 (RHSA-2026:59387)

The remote Redhat Enterprise Linux 9 host has a package installed that is affected by multiple vulnerabilities as referenced in the RHSA-2026:59387 advisory. The modh2 Apache httpd module implements the HTTP2 protocol h2+h2c on top of libnghttp2 for httpd 2.4 servers. Security Fixes: httpd:...