Apache HTTP Server 2.4.x Path Equivalence in mod_userdir (UserDir)
CVE-2026-79768 Published on October 1, 2026
Apache HTTP Server: mod_userdir information disclosure
Path equivalence: '/./' (single dot directory) vulnerability in Apache HTTP Server's mod_userdir module when configured with absolute non-wildcard UserDir directive (the 2nd form in https://httpd.apache.org/docs/2.4/mod/mod_userdir.html#userdir)
This issue affects Apache HTTP Server: from 2.4.0 through 2.4.68.
Vulnerability Analysis
CVE-2026-79768 is exploitable with network access, and does not require authorization privileges or user interaction. This vulnerability is considered to have a low attack complexity. The potential impact of an exploit of this vulnerability is considered to have a small impact on confidentiality, a small impact on integrity and availability.
Timeline
reported
fixed in 2.4.x by r1938680 48 days later.
2.4.69 released
Weakness Type
What is a Single Dot Directory Vulnerability?
A software system that accepts path input in the form of single dot directory exploit ('/./') without appropriate validation can lead to ambiguous path resolution and allow an attacker to traverse the file system to unintended locations or access arbitrary files.
CVE-2026-79768 has been classified to as a Single Dot Directory vulnerability or weakness.
Products Associated with CVE-2026-79768
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Affected Versions
Apache Software Foundation Apache HTTP Server:- Version 2.4.0, <= 2.4.68 is affected.