Description
NULL pointer dereference vulnerability in Apache HTTP Server's mod_md during HTTP request processing.
This issue affects Apache HTTP Server: from 2.4.30 through 2.4.69.
Affected products
| Vendor | Product | Affected | Fixed |
|---|---|---|---|
| Apache Software Foundation | Apache HTTP Server | 2.4.30 – ≤ 2.4.70 | — |
Fixed in Linux distributions
Distributions backport fixes, so the version that fixes this vulnerability differs per release — upgrade to at least the version shown. From the distributions' security trackers and advisories.
Debian
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Debian 14 | apache2 | No fix yet | — |
| Debian 13 | apache2 | 2.4.71-1~deb13u1 | — |
| Debian 12 | apache2 | 2.4.71-1~deb12u1 | — |
Ubuntu
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Ubuntu 26.10 | apache2 | 2.4.68-1ubuntu6.2 | USN-9090-1 |
| Ubuntu 26.04 LTS | apache2 | 2.4.66-2ubuntu2.8 | USN-9090-1 |
| Ubuntu 24.04 LTS | apache2 | 2.4.58-1ubuntu8.19 | USN-9090-1 |
| Ubuntu 22.04 LTS | apache2 | 2.4.52-1ubuntu4.27 | USN-9090-1 |
Show 4 more (older releases, extended support, other products)Fewer releases
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Ubuntu Pro 20.04 LTS | apache2 | 2.4.41-4ubuntu3.23+esm11 | USN-9090-1 |
| Ubuntu Pro 18.04 LTS | apache2 | 2.4.29-1ubuntu4.27+esm15 | USN-9090-1 |
| Ubuntu Pro 16.04 LTS | apache2 | 2.4.18-2ubuntu3.17+esm24 | USN-9090-1 |
| Ubuntu Pro 14.04 LTS | apache2 | 2.4.7-1ubuntu4.22+esm19 | USN-9090-1 |
Alpine
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Alpine v3.24 | apache2 | 2.4.71-r0 | — |
| Alpine v3.23 | apache2 | 2.4.71-r0 | — |
| Alpine v3.22 | apache2 | 2.4.71-r0 | — |
Amazon Linux
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Amazon Linux 2 | httpd +7 | 2.4.71-1.amzn2.0.1 | ALAS2-2026-4114 |
| Amazon Linux 2 | mod_ssl +2 | 1:2.4.71-1.amzn2.0.1 | ALAS2-2026-4114 |
Advisories 3
- USN-9090-1 apache2 vulnerabilities Ubuntu Security Notices (USN) · Nov 13, 2026
- WID-SEC-2026-4517 Apache HTTP Server: Mehrere Schwachstellen BSI CERT-Bund (WID) · Nov 12, 2026
- ALAS2-2026-4114 Critical: httpd security update (Amazon Linux 2) Amazon Linux Security Center (ALAS) · Nov 12, 2026
References
- https://httpd.apache.org/security/vulnerabilities_24.html vendor-advisory