# Ubuntu releases security updates for Apache HTTP Server to address multiple CVEs

> **Key takeaway:** Multiple vulnerabilities in Apache HTTP Server modules, including mod_http2 and mod_vhost_alias, could allow remote code execution or denial of service.

**Published:** 2026-11-12T21:25:57+00:00 
**Source:** Ubuntu Security & Release Notices 
**Category:** distro-news 
**Canonical URL:** https://fosswire.org/news/ubuntu-releases-security-updates-for-apache-http-server-to-a.html 

## Summary
Canonical has issued security updates for the Apache HTTP Server across several Ubuntu releases, including 20.04 LTS, 22.04 LTS, 24.04 LTS, 26.04 LTS, and 26.10. The updates address five distinct vulnerabilities that impact various core modules of the web server.

These security flaws range from memory management errors to logic issues in request handling. While some vulnerabilities primarily lead to denial of service via server crashes, others pose a higher risk by potentially allowing remote attackers to execute arbitrary code on the host system.

## Vulnerability breakdown and affected modules
- **mod_http2 and mod_vhost_alias:** These modules contain flaws involving heap corruption and a one-byte stack buffer overflow, respectively, which could lead to remote code execution or denial of service.
- **mod_dav and mod_md:** The WebDAV module (mod_dav) suffers from incorrect memory size calculations during lock handling, while the metadata module (mod_md) is susceptible to NULL pointer dereferences, both resulting in potential denial of service.
- **CGI Redirect Logic:** A specific vulnerability affecting Ubuntu 26.04 LTS and 26.10 allows the server to incorrectly treat internal redirects from CGI programs as CGI programs themselves, enabling arbitrary code execution.
- **Affected Versions:** Fixes are distributed via updated apache2 packages, with version increments such as 2.4.68-1ubuntu6.2 for Ubuntu 26.10 and 2.4.58-1ubuntu8.19 for Ubuntu 24.04 LTS.

## Why it matters
System administrators running Apache on Ubuntu must apply these updates immediately to prevent remote exploitation and service interruptions. The inclusion of fixes for older LTS releases via Ubuntu Pro ensures that long-term enterprise deployments remain protected against these specific memory and logic vulnerabilities.