CVE-2026-48946
Joomla Extension - getk2.org - Privileged RCE vulnerability in K2 extension for Joomla < 2.26
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.
INFO
Published Date :
June 25, 2026, 4:16 p.m.
Last Modified :
June 28, 2026, 7:16 p.m.
Remotely Exploit :
Yes !
Source :
[email protected]
CVSS Scores
| Score | Version | Severity | Vector | Exploitability Score | Impact Score | Source |
|---|---|---|---|---|---|---|
| CVSS | 134c704f-9b21-4f2e-91b3-4a467353bcc0 | |||||
| CVSS 3.1 | MEDIUM | 134c704f-9b21-4f2e-91b3-4a467353bcc0 |
Solution
- Configure Apache to disallow PHP execution in upload directories.
- Remove any previously uploaded PHP files from the web server.
- Update K2 to prevent future file type uploads.
- Apply vendor patches for K2
References to Advisories, Solutions, and Tools
Here, you will find a curated list of external links that provide in-depth
information, practical solutions, and valuable tools related to
CVE-2026-48946.
| URL | Resource |
|---|---|
| https://www.getk2.org/ | Product |
CWE - Common Weakness Enumeration
While CVE identifies
specific instances of vulnerabilities, CWE categorizes the common flaws or
weaknesses that can lead to vulnerabilities. CVE-2026-48946 is
associated with the following CWEs:
Common Attack Pattern Enumeration and Classification (CAPEC)
Common Attack Pattern Enumeration and Classification
(CAPEC)
stores attack patterns, which are descriptions of the common attributes and
approaches employed by adversaries to exploit the CVE-2026-48946
weaknesses.
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-2026-48946 vulnerability anywhere in the article.
The following table lists the changes that have been made to the
CVE-2026-48946 vulnerability over time.
Vulnerability history details can be useful for understanding the evolution of a vulnerability, and for identifying the most recent changes that may impact the vulnerability's severity, exploitability, or other characteristics.
-
CVE Modified by [email protected]
Jun. 28, 2026
Action Type Old Value New Value Changed Affected [{'vendor': 'getk2.com', 'product': 'K2 extension for Joomla', 'versions': [{'status': 'affected', 'version': '1.0-2.26'}], 'defaultStatus': 'unaffected'}] [{'vendor': 'getk2.org', 'product': 'K2 extension for Joomla', 'versions': [{'status': 'affected', 'version': '1.0-2.26'}], 'defaultStatus': 'unaffected'}] -
Initial Analysis by [email protected]
Jun. 26, 2026
Action Type Old Value New Value Added CPE Configuration OR *cpe:2.3:a:joomlaworks:k2:*:*:*:*:*:joomla!:*:* versions up to (including) 2.26 Added Reference Type Joomla! Project: https://www.getk2.org/ Types: Product -
CVE Modified by 134c704f-9b21-4f2e-91b3-4a467353bcc0
Jun. 26, 2026
Action Type Old Value New Value Changed SSVC {'id': 'CVE-2026-48946', 'role': 'CISA Coordinator', 'options': [{'exploitation': 'none'}, {'automatable': 'no'}, {'technicalImpact': 'partial'}], 'version': '2.0.3', 'timestamp': '2026-06-25T18:52:26.276335Z'} {'id': 'CVE-2026-48946', 'role': 'CISA Coordinator', 'options': [{'exploitation': 'none'}, {'automatable': 'no'}, {'technicalImpact': 'total'}], 'version': '2.0.3', 'timestamp': '2026-06-25T00:00:00+00:00'} -
CVE Modified by 134c704f-9b21-4f2e-91b3-4a467353bcc0
Jun. 25, 2026
Action Type Old Value New Value Added CVSS V3.1 AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:L Added SSVC {'id': 'CVE-2026-48946', 'role': 'CISA Coordinator', 'options': [{'exploitation': 'none'}, {'automatable': 'no'}, {'technicalImpact': 'partial'}], 'version': '2.0.3', 'timestamp': '2026-06-25T18:52:26.276335Z'} -
New CVE Received by [email protected]
Jun. 25, 2026
Action Type Old Value New Value Added Affected [{'vendor': 'getk2.com', 'product': 'K2 extension for Joomla', 'versions': [{'status': 'affected', 'version': '1.0-2.26'}], 'defaultStatus': 'unaffected'}] Added 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. Added CWE CWE-434 Added Reference https://www.getk2.org/