# CVE-2026-106023: Apache HTTP Server mod_md NULL pointer dereference

Source: https://junglewise.ai/threats/cve-2026-106023-null-pointer-dereference-vulnerability-in-apache-http-server-s  
Publisher: Junglewise Threat Intelligence, https://junglewise.ai/threats  
Published: 2026-11-11. Updated: 2026-11-11  
License: CC BY 4.0 with a link back

CVE-2026-106023 · Severity: info · Published 2026-11-11

Apache HTTP Server is a widely-used web server software. A NULL pointer dereference vulnerability in the mod_md module can cause child processes to crash during HTTP request processing, resulting in a denial of service that interrupts web service availability.

Technologies: [Apache HTTP Server](https://junglewise.ai/threats/technologies/http-server). Vendors: [Apache](https://junglewise.ai/threats/vendors/apache).

## Quick answers

**Is CVE-2026-106023 exploited in the wild?** No. Junglewise Threat Intelligence has no report of CVE-2026-106023 being exploited in the wild.

**How severe is CVE-2026-106023?** Informational severity, published 11 November 2026.

**Which products and versions are affected?** Apache HTTP Server 2.4.30 through 2.4.70.

**Is there a fix for CVE-2026-106023?** Yes: fixed in Apache HTTP Server 2.4.71. Junglewise finds every place you run it, drafts the upgrade and applies it once you approve.

**How is CVE-2026-106023 attacked?** It is attacked over the network, in a web application.

**Am I affected by CVE-2026-106023?** Check whether you run Apache HTTP Server at an affected version. Junglewise does that check for you around the clock: connect your code, cloud and domains, and it matches new vulnerabilities like this one against what you actually run and tells you when one reaches you.

## How to fix

- Fixed in Apache HTTP Server 2.4.71

## Technical details

A NULL pointer dereference in Apache HTTP Server's mod_md module occurs during HTTP request processing. The vulnerability affects versions 2.4.30 through 2.4.70 and is triggered by network-accessible HTTP requests; no authentication or user interaction is required. An attacker can crash child processes, causing a denial of service.

## Affected products

- Apache HTTP Server 2.4.30 through 2.4.70

## References

- [https://httpd.apache.org/security/vulnerabilities_24.html](https://httpd.apache.org/security/vulnerabilities_24.html)

## Related threats

- [Apache HTTP Server mod_http2 heap corruption in assign_headers](https://junglewise.ai/threats/cve-2026-119618-concurrent-execution-using-shared-resource-with-improper)
- [Apache HTTP Server mod_vhost_alias stack buffer overflow](https://junglewise.ai/threats/cve-2026-109163-stack-based-buffer-overflow-vulnerability-in-apache-http-server)
- [Apache HTTP Server mod_dav_fs integer overflow in namespace handling](https://junglewise.ai/threats/cve-2026-93546-integer-overflow-in-mod-dav-fs-in-apache-http-server-through-2-4)
- [Apache HTTP Server mod_userdir path equivalence in single-dot directory](https://junglewise.ai/threats/cve-2026-79768-path-equivalence-single-dot-directory-vulnerability-in-apache)
- [Apache HTTP Server response smuggling in mod_proxy_uwsgi](https://junglewise.ai/threats/cve-2026-63718-inconsistent-interpretation-of-http-requests-http-request)