Joomla Extension up to 6.1.1 com_joomlaupdate extract.php path traversal

Summaryinfo

A vulnerability, which was classified as problematic, was found in Joomla Extension up to 6.1.1. Affected is an unknown function of the file extract.php of the component com_joomlaupdate. Executing a manipulation can lead to path traversal. This vulnerability is handled as CVE-2026-73327. The attack can be executed remotely. There is not any exploit available.

Detailsinfo

A vulnerability has been found in Joomla Extension up to 6.1.1 and classified as problematic. This vulnerability affects some unknown functionality of the file extract.php of the component com_joomlaupdate. The manipulation with an unknown input leads to a path traversal vulnerability. The CWE definition for the vulnerability is CWE-22. The product uses external input to construct a pathname that is intended to identify a file or directory that is located underneath a restricted parent directory, but the product does not properly neutralize special elements within the pathname that can cause the pathname to resolve to a location that is outside of the restricted directory. As an impact it is known to affect confidentiality, integrity, and availability. CVE summarizes:

Joomla 6.1.1 contains a path traversal vulnerability in the com_joomlaupdate extension that allows a Super User to be induced into extracting a crafted archive containing directory traversal sequences or absolute paths in ZIP entry filenames. Attackers can supply malicious ZIP entry names with parent-directory segments or absolute paths to the extract.php extraction routine, causing files to be written outside the intended destination root and enabling persistent remote code execution via planted PHP files.

The advisory is available at github.com. This vulnerability was named CVE-2026-73327 since 08/11/2026. The exploitation appears to be easy. The attack can be initiated remotely. The exploitation needs additional levels of successful authentication. Successful exploitation requires user interaction by the victim. Technical details are known, but there is no available exploit. The structure of the vulnerability defines a possible price range of USD $5k-$25k at the moment (estimation calculated on 08/12/2026). This vulnerability is assigned to T1006 by the MITRE ATT&CK project.

By approaching the search of inurl:extract.php it is possible to find vulnerable targets with Google Hacking.

There is no information about possible countermeasures known. It may be suggested to replace the affected object with an alternative product.

If you want to get best quality of vulnerability data, you may have to visit VulDB.

Productinfo

Type

• Content Management System

Vendor

• Joomla

Name

• Extension

Version

• 6.1.0
• 6.1.1

License

• open-source

Website

• Vendor: https://www.joomla.org/

CPE 2.3info

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CPE 2.2info

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If you want to get best quality of vulnerability data, you may have to visit VulDB.

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