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

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. 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

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