CVE-2026-48944 Joomla Extension - getk2.org - Exposure of sensitive files via attachment copy in K2 extension for Joomla < 2.26
An authenticated Author can exploit a path traversal flaw to copy sensitive files like configuration.php to a public directory and read them.
- Exploited in the wild
- Not known
- Login needed
- Any signed-in user
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- None listed
What is CVE-2026-48944?
CVE-2026-48944 is a medium-severity path traversal vulnerability in getk2.org K2 extension for Joomla, published on 25 Jun 2026. Any signed-in user can exploit it over the network, with no action from the victim.
Official description
The K2 frontend article-save handler accepts an `attachment[N][existing]` POST field that is concatenated with `JPATH_SITE/` and passed to `JFile::copy()`. `JPath::clean` does NOT strip `..`, and there is no allow-list of source paths. An Author can therefore copy `configuration.php` (or any other file readable by the web user — including `../../../etc/passwd`) into `/media/k2/attachments/`, then retrieve the contents via the K2 attachment-download endpoint.
Weakness: CWE-22
Which versions are affected by CVE-2026-48944?
It affects 1 product.
Products include Joomlaworks K2.
How do I fix CVE-2026-48944?
No fix has been published for CVE-2026-48944 yet. Limit exposure of the affected software until one is available.
Upgrade, and resolve every user-supplied path against an allowed base folder before opening it. More about Path traversal.
Is CVE-2026-48944 being exploited?
There is no known exploitation of CVE-2026-48944 in the wild and no public exploit code.
Other vulnerabilities in getk2.org K2 extension for Joomla
- CVE-2019-19634 class.upload.php in verot.net omits .pht from the set of dangerous file extensions
- CVE-2019-19576 Remote code execution in verot/class.upload.php
- CVE-2018-7482 Path traversal in n/a
- CVE-2026-48941 Joomla Extension - getk2.org - Unauthenticated folder delete in K2 extension for Joomla < 2.26
- CVE-2026-48943 Joomla Extension - getk2.org - Authenticated user property mass-assignment in K2 extension for Joomla < 2.26
Sources
Also known as GHSA-858x-6wp8-wp5c.