apache2 · Path equivalence: '/./' (single dot directory) vulnerability in Apache HTTP Server's mod_userdir module when
Affects apache2Source GCVE Database
Not known to be exploited · CVSS 5.3 Medium · fixed in 2.4.7-1ubuntu4.22+esm17 : update apache2 when convenient.
Data as of 10 Nov 2026, 06:39 UTC
- Patch
- Available – fixed in 2.4.7-1ubuntu4.22+esm17, 2.4.18-2ubuntu3.17+esm22, 2.4.29-1ubuntu4.27+esm13 +4
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:NExploitation evidence
Disclosed: evidence found.
CVE published 1 Oct 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 9 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
|
Ubuntu Pro 18.04 LTSapache2pkg:deb/ubuntu/apache2?arch=source&distro=esm-infra/bionicOther 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 promptly. Ubuntu has released fixed package versions for all supported LTS releases and Ubuntu Pro users. Updating to the fixed versions listed in the vendor advisory (e.g., 2.4.7-1ubuntu4.22+esm17 and later) will remediate the vulnerability. Standard system updates will apply the necessary fixes.
Description
A path equivalence vulnerability involving the '/./' (single dot directory) sequence exists in the Apache HTTP Server's mod_userdir module when configured with an absolute non-wildcard UserDir directive. This affects Apache HTTP Server versions from 2.4.0 through 2.4.68. The vulnerability could allow a remote attacker to obtain sensitive information due to improper handling of user directory access paths. The issue has a medium severity with a CVSS score of 5.3. Fixes are available in multiple updated package versions across supported Ubuntu releases.
References
- ubuntu.com/security/CVE-2026-79768 (opens in a new tab)
- cve.org/CVERecord?id=CVE-2026-79768 (opens in a new tab)
- httpd.apache.org/security/vulnerabilities_24.html (opens in a new tab)
- httpd.apache.org/security/vulnerabilities_24.html (opens in a new tab)
- openwall.com/lists/oss-security/2026/10/01/29 (opens in a new tab)
- ubuntu.com/security/notices/USN-8931-1 (opens in a new tab)