NULL pointer dereference in Apache HTTP Server - CVE-2026-106023
Published: November 11, 2026
Vulnerability identifier: #VU165853
CSH Severity: Medium
CVSS v4: 6.9 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N]
CVE-ID: CVE-2026-106023
CWE-ID: CWE-476
Exploitation vector: Remote access
Exploit availability:
No public exploit available
Vulnerability details
The vulnerability allows a remote attacker to cause a denial of service by crashing a child process.
The vulnerability exists due to a null pointer dereference in mod_md when processing HTTP requests. A remote attacker can send a crafted HTTP request to trigger the dereference and crash a child process.
Affected software
Apache HTTP Server
How to mitigate CVE-2026-106023
Install security update from vendor's website.
Apache HTTP Server - update to 2.4.71