CVE-2026-44119: Apache HTTP Server Privilege Escalation

CVE-2026-44119 Overview

CVE-2026-44119 is an Improper Privilege Management vulnerability [CWE-269] in Apache HTTP Server versions 2.4.67 and earlier. The flaw allows local .htaccess authors to read files with the privileges of the httpd user. Attackers with the ability to author .htaccess files on the server can leverage this issue to access content otherwise restricted to the web server process identity. The Apache Software Foundation has released version 2.4.68 to address the issue.

Critical Impact
Local .htaccess authors can read files accessible to the httpd user, exposing sensitive server-side data in shared hosting and multi-tenant environments.

Affected Products

Apache HTTP Server versions through 2.4.67
Deployments allowing user-supplied .htaccess files (shared hosting, multi-tenant servers)
Systems running httpd with read access to sensitive files outside web roots

Discovery Timeline

2026-06-08 - CVE-2026-44119 published to NVD
2026-06-11 - Last updated in NVD database

Technical Details for CVE-2026-44119

Vulnerability Analysis

The vulnerability stems from how Apache HTTP Server processes directives within .htaccess files. A local user authorized to author .htaccess content can craft directives that cause httpd to read files on their behalf. Because httpd typically runs with broader file system access than the .htaccess author, the attacker gains read access to files they could not otherwise open. This breaks the privilege boundary between unprivileged content authors and the web server process.

The issue is classified under [CWE-269] Improper Privilege Management. Exploitation requires local access and low privileges, but no user interaction. Confidentiality impact is high, while integrity and availability are unaffected.

Root Cause

Apache HTTP Server permits .htaccess directives to trigger file reads that execute under the httpd process identity rather than under the identity of the .htaccess author. The server does not adequately constrain these operations to files the author would normally be authorized to read. This design choice creates a confused deputy condition where the privileged httpd process performs reads on behalf of less-privileged users.

Attack Vector

An attacker requires the ability to place or modify .htaccess files in a directory served by Apache. This condition is common in shared hosting environments, multi-tenant deployments, and any configuration where untrusted users control parts of the document tree. The attacker crafts directives that cause httpd to open and disclose target files. See the Apache HTTP Server Vulnerabilities advisory and the Openwall OSS-Security discussion for technical details.

// No verified public exploit code is available for CVE-2026-44119.
// Refer to the vendor advisory for technical specifics.

Detection Methods for CVE-2026-44119

Indicators of Compromise

Unexpected .htaccess file modifications in directories controlled by untrusted users
Apache error or access log entries referencing sensitive paths outside normal web roots
File access patterns where httpd reads files unrelated to served content

Detection Strategies

Inventory all Apache HTTP Server installations and identify versions at or below 2.4.67
Audit document trees for .htaccess files authored by non-administrative users
Review Apache configuration to identify directories where AllowOverride permits unsafe directives
Correlate httpd file read events with the originating .htaccess author identity

Monitoring Recommendations

Forward Apache access and error logs to a centralized analytics platform for review
Monitor file integrity on .htaccess files in shared hosting environments
Alert on httpd reads of files outside expected document roots, such as /etc/, application config files, or other tenant directories

How to Mitigate CVE-2026-44119

Immediate Actions Required

Upgrade Apache HTTP Server to version 2.4.68 or later on all affected systems
Inventory hosts running versions through 2.4.67 and prioritize multi-tenant and shared hosting deployments
Review AllowOverride settings and restrict .htaccess capabilities where not required

Patch Information

The Apache Software Foundation released version 2.4.68 to fix CVE-2026-44119. Administrators should upgrade using their distribution package manager or by building from the official source release. Confirm remediation by verifying the installed version with httpd -v after deployment. Refer to the Apache HTTP Server Vulnerabilities advisory for the authoritative patch reference.

Workarounds

Set AllowOverride None in the main server configuration for directories where .htaccess is not required
Restrict who can create or modify .htaccess files via file system permissions
Run httpd with the minimum file system privileges necessary, limiting exposure of sensitive files

bash

# Configuration example: disable .htaccess overrides where not needed
<Directory "/var/www/html">
    AllowOverride None
    Require all granted
</Directory>

# Verify installed Apache version
httpd -v