Intel

AIKIDO-2026-10737

httpd is vulnerable to Double Free

Double FreeCVE-2026-23918 Published May 5, 2026

91

Critical Risk

This Affects:

OShttpd
2.4.66 - 2.4.66
Fixed in 2.4.67
Are you affected? Scan for Free

TL;DR

A double free vulnerability in Apache HTTP Server when processing HTTP/2 protocol requests can lead to memory corruption due to improper handling of freed memory. This condition may allow an attacker to trigger a crash or manipulate memory structures, potentially resulting in remote code execution (rce) in certain configurations. This issue affects Apache HTTP Server builds with HTTP/2 support enabled. Exploitation typically requires sending specially crafted HTTP/2 requests that cause the server to free the same memory region multiple times.

Who does this affect?

You are affected if you are using a version that falls within the vulnerable range.

Background info

httpd is vulnerable to Double Free in versions 2.4.66 - 2.4.66.

How to fix this

Upgrade the httpd/apache library to the patch version.