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

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-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

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-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 python3 h2ghost.py -h usage: h2ghost.py -h --host HOST --port PORT --tls --no-tls --iterations ITERATIONS --burst-n BURSTN --timeout TIMEOUT --crash-threshold...

CVE-2026-23918-poc

CVE-2026-23918 — Apache modhttp2 Double Free Affected: Apache HTTP Server 2.4.66 with modhttp2 + Event MPM Fixed in: Apache 2.4.67 modh2 v2.0.37 CVSS 3.1: 8.8 HIGH — Unauthenticated Remote Code Execution possible CWE: CWE-415 Double Free What's the vulnerability modhttp2 in Apache 2.4.66 has a...

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...

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...

OESA-2026-4467 httpd security update

Apache HTTP Server is a powerful and flexible HTTP/1.1 compliant web server. Security Fixes: A memory calculation bug in moddav in Apache httpd 2.4.67 and earlier allows an attacker with permission to create WebDAV locks to crash server child processes. Users are recommended to upgrade to version...

OESA-2026-4465 httpd security update

Apache HTTP Server is a powerful and flexible HTTP/1.1 compliant web server. Security Fixes: Out-of-bounds Write vulnerability in Apache HTTP Server's modcharsetlite. This issue affects Apache HTTP Server: from 2.4.0 through 2.4.68.CVE-2026-56153 Use After Free vulnerability in Apache HTTP Server...

OESA-2026-4366 httpd security update

Apache HTTP Server is a powerful and flexible HTTP/1.1 compliant web server. Security Fixes: A memory calculation bug in moddav in Apache httpd 2.4.67 and earlier allows an attacker with permission to create WebDAV locks to crash server child processes. Users are recommended to upgrade to version...

OESA-2026-4365 httpd security update

Apache HTTP Server is a powerful and flexible HTTP/1.1 compliant web server. Security Fixes: A memory calculation bug in moddav in Apache httpd 2.4.67 and earlier allows an attacker with permission to create WebDAV locks to crash server child processes. Users are recommended to upgrade to version...

Astra Linux – Vulnerability in Apache2

The “Use After Free” vulnerability in the Apache HTTP Server module modhttp2 occurs when file handles are already exhausted. This issue affects Apache HTTP Server versions 2.4.55 through 2.4.67...

Updated apache package fixes security vulnerabilities

Limited RCE for some internal redirects to non-CGI files in CGI directories. CVE-2026-42356 moddav shared lock overflow. CVE-2026-42528 modheartmonitor denial of service. CVE-2026-46729 modsession: Session cookie not removed during internal redirect. CVE-2026-47360 modauthdigest reauthentication...

MGASA-2026-0502 Updated apache package fixes security vulnerabilities

Limited RCE for some internal redirects to non-CGI files in CGI directories. CVE-2026-42356 moddav shared lock overflow. CVE-2026-42528 modheartmonitor denial of service. CVE-2026-46729 modsession: Session cookie not removed during internal redirect. CVE-2026-47360 modauthdigest reauthentication...

Ubuntu 14.04 LTS / 16.04 LTS / 18.04 LTS / 20.04 LTS / 22.04 LTS / 24.04 LTS / 26.04 LTS : Apache HTTP Server vulnerabilities (USN-8898-1)

The remote Ubuntu 14.04 LTS / 16.04 LTS / 18.04 LTS / 20.04 LTS / 22.04 LTS / 24.04 LTS / 26.04 LTS host has packages installed that are affected by multiple vulnerabilities as referenced in the USN-8898-1 advisory. It was discovered that Apache HTTP Server's modrewrite module incorrectly handled...

K000163653: Apache HTTP Server vulnerabilities CVE-2026-56449 and CVE-2026-57941

Security Advisory Description CVE-2026-56449 Out-of-bounds Write vulnerability in Apache HTTP Server's modproxyhtml with crafted HTTP response bodies. This issue affects Apache HTTP Server: from 2.4.0 through 2.4.68. CVE-2026-57941 Use After Free vulnerability in Apache HTTP Server's modhttp2 via...

Rocky Linux 8.6 [CIQ] Security Update: mod_http2 Multiple Vulnerabilities (ciqsa-2026_1605)

The Rocky Linux 8.6 host has a package installed that is affected by multiple vulnerabilities as referenced in the CIQ ciqsa-20261605 advisory. This advisory aggregates security fixes for the modhttp2 SRPM in CIQ LTS 8.6. It addresses 14 CVEs: CVE-2023-44487, CVE-2019-9516, CVE-2019-9511,...

EulerOS 2.0 SP13 : mod_http2 (EulerOS-SA-2026-4072)

According to the versions of the modhttp2 packages installed, the EulerOS installation on the remote host is affected by the following vulnerabilities : Memory Allocation with Excessive Size Value vulnerability in Apache HTTP Server's modhttp leads to denial of service via malicious HTTP requests...