CVE-2026-106023: Apache2 · mod_md NULL pointer dereference leads to child process crash
Affects apache2Source GCVE Database
Not known to be exploited · fixed in 2.4.41-4ubuntu3.23+esm11 : update apache2 when convenient.
Data as of 13 Nov 2026, 14:17 UTC
Rated by Threat Radar · CVSS not yet scored by NVD
Thin evidence
One scorer or none- Patch
- Available – fixed in 2.4.41-4ubuntu3.23+esm11, 2.4.52-1ubuntu4.27, 2.4.58-1ubuntu8.19 +2
Exploitation evidence
Disclosed: evidence found.
CVE published 11 Nov 2026
Detectable: no evidence on record.
No public nuclei template indexed
Weaponized: no evidence on record.
No public exploit code indexed in Metasploit or Exploit-DB
Exploited in the wildExploited: no evidence on record.
Not in CISA KEV and no source reports exploitation
Observed by OffSeq MirageSeen by Mirage: no evidence on record.
No attack traffic recorded by OffSeq Mirage sensors
A missing step is not evidence of safety. Sources: cve.org (opens in a new tab), the Metasploit, Exploit-DB and nuclei-templates index as of 13 Nov 2026.
What to do
Upgrade to a fixed release listed under Affected software.
Patches and advisories
Affected software
| Product | Affected | Fixed in |
|---|---|---|
Ubuntu 26.10apache2pkg:deb/ubuntu/apache2?arch=source&distro=stonkingOther threats | Affected
| Fixed in
|
Ubuntu 26.04 LTSapache2pkg:deb/ubuntu/apache2?arch=source&distro=resoluteOther threats | Affected
| Fixed in
|
Ubuntu 24.04 LTSapache2pkg:deb/ubuntu/apache2?arch=source&distro=nobleOther threats | Affected
| Fixed in
|
Ubuntu 22.04 LTSapache2pkg:deb/ubuntu/apache2?arch=source&distro=jammyOther threats | Affected
| Fixed in
|
Ubuntu Pro 20.04 LTSapache2pkg:deb/ubuntu/apache2?arch=source&distro=esm-infra/focalOther threats | Affected
| Fixed in
|
Check your own hosts for these packages with threat-finder (opens in a new tab), our free open-source scanner.
AI-suggested
A patch is available and should be applied by updating the apache2 packages to the fixed versions listed in the Ubuntu security advisory USN-9090-1. Standard system updates or Ubuntu Pro can be used to obtain these fixes. No additional mitigation actions are required beyond applying the official updates.
Description
A NULL pointer dereference vulnerability exists in the Apache HTTP Server's mod_md module. This flaw can cause the child process of the server to crash, resulting in a denial of service. The issue affects multiple Ubuntu releases and specific apache2 package versions. Fixes have been released and are available through standard system updates or Ubuntu Pro.