What is CVE-2026-48946?

CVE-2026-48946 is a medium-severity vulnerability in Getk2.com K2 Extension For Joomla, classified under Unrestricted Upload of File with Dangerous Type. CVSS score: 6.3/10. Published 2026-06-25.

How severe is CVE-2026-48946?

Medium severity. CVSS v3 base score is 6.3 out of 10.

Arbitrary file upload in Getk2.com K2 Extension For Joomla

CVE-2026-48946

The K2 frontend article-attachment upload path accepts files whose extension is `.php`, and Apache's standard mod_php matches `\.php$` and executes them under the K2 web user. A K2 Author can upload a `shell.php`, then fetch `/media/k2/att…

Vulnerability class: Unrestricted File Upload

CVSS v3 metric

CVSS v3 base score 6.3 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:L.

Affected products

Getk2.com K2 Extension For Joomla — versions 1.0-2.26

Weakness classification (CWE)

CWE-434 — Unrestricted Upload of File with Dangerous Type

References

security@joomla.org (product)

Frequently asked questions

What is CVE-2026-48946?: CVE-2026-48946 is a medium-severity vulnerability in Getk2.com K2 Extension For Joomla, classified under Unrestricted Upload of File with Dangerous Type. CVSS score: 6.3/10. Published 2026-06-25.
How severe is CVE-2026-48946?: Medium severity. CVSS v3 base score is 6.3 out of 10.