Quick answers
- Is CVE-2026-48944 exploited in the wild?
- No. Junglewise Threat Intelligence has no report of CVE-2026-48944 being exploited in the wild.
- How severe is CVE-2026-48944?
- Informational severity, with a CVSS score of 0, published 25 June 2026.
- Which products and versions are affected?
- JoomlaWorks K2 1.0-2.26.
- Is there a fix for CVE-2026-48944?
- No fixed version is recorded yet. Check the vendor's advisory in the references below. If you run it, Junglewise drafts a mitigation that fits your setup and applies it once you approve, with senior security engineers behind it.
- How is CVE-2026-48944 attacked?
- It is attacked over the network, in a software library.
- Am I affected by CVE-2026-48944?
- Check whether you run JoomlaWorks K2 at an affected version. Junglewise does that check for you around the clock: connect your code, cloud and domains, and it matches new vulnerabilities like this one against what you actually run and tells you when one reaches you.
Technical details
A path traversal vulnerability exists in the K2 frontend article-save handler due to improper validation of the `attachment[N][existing]` POST field. This field is concatenated with `JPATH_SITE/` and passed to `JFile::copy()` without sufficient sanitization, as `JPath::clean` fails to strip '..' sequences. An attacker with Author-level privileges can exploit this to copy arbitrary files readable by the web user (such as `configuration.php` or `/etc/passwd`) into the public `/media/k2/attachments/` directory. Once copied, the files can be retrieved via the standard K2 attachment-download endpoint.
Affected products
- getk2.com K2 extension for Joomla 1.0-2.26
Timeline
- 2026-06-25: advisory: Vulnerability published by the Joomla! Project