CVE-2026-48944
Joomla Extension - getk2.com - Exposure of sensitive files via attachment copy in K2 extension for Joomla < 2.26
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.
INFO
Published Date :
June 25, 2026, 3:24 p.m.
Last Modified :
June 25, 2026, 3:24 p.m.
Remotely Exploit :
No
Source :
Joomla
Affected Products
The following products are affected by CVE-2026-48944
vulnerability.
Even if cvefeed.io is aware of the exact versions of the
products
that
are
affected, the information is not represented in the table below.
No affected product recoded yet
Solution
- Validate attachment paths against expected directories.
- Sanitize all user-supplied path components.
- Implement an allow-list for source file types.
- Update the K2 component to the latest version.
We scan GitHub repositories to detect new proof-of-concept exploits. Following list is a collection of public exploits and proof-of-concepts, which have been published on GitHub (sorted by the most recently updated).
Results are limited to the first 15 repositories due to potential performance issues.
The following list is the news that have been mention
CVE-2026-48944 vulnerability anywhere in the article.