CVE-2026-48946

Name: CVE-2026-48946
Creator: NVD / NIST
Published: 2026-06-25T16:16:37.18+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

MEDIUMCVSS 6.3/10EPSS 0.17%

Last modified Jun 26, 2026

CVE-2026-48946 is a medium-severity vulnerability rated 6.3/10 on the CVSS scale. 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/attachments/shell.php` and execute arbitrary PHP code in the web server's context.. EPSS estimates a 0.17% chance of exploitation in the next 30 days.

Description

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/attachments/shell.php` and execute arbitrary PHP code in the web server's context.

Metrics

CVSS 3.1

6.3/10

CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:L

EPSS Probability

0.17%

6.4th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

CWE-434

Affected Software

Vendor	Product	Versions
Joomlaworks	K2	<= 2.26

References

https://www.getk2.org/Product

Timeline

Published: Jun 25, 2026
Last Modified: Jun 26, 2026
Status: Analyzed

Frequently Asked Questions

What is CVE-2026-48946?

How severe is CVE-2026-48946?

CVE-2026-48946 has a CVSS score of 6.3/10 (MEDIUM severity). The EPSS model estimates a 0.17% probability of exploitation in the next 30 days.

How do I fix CVE-2026-48946?

Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

Are you affected by CVE-2026-48946?

Run a free Strix scan to check your systems for this vulnerability.

Scan your code now

Source: NVD / NIST