CVE-2026-48945 Joomla Extension - getk2.org - Privileged RCE vulnerability in K2 extension for Joomla < 2.26
Attackers can upload malicious PHP files via archive extraction in the K2 extension, leading to remote code execution on Joomla sites.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- None listed
What is CVE-2026-48945?
CVE-2026-48945 is a medium-severity vulnerability in getk2.org K2 extension for Joomla, published on 25 Jun 2026. An attacker can exploit it over the internet without logging in, with no action from the victim.
Official description
The K2 article gallery upload path accepts a zip/tar archive, extracts it under `/media/k2/galleries/<id>/`, and only renames image files (gif/jpg/jpeg/png/webp) to safe names — non-image files (including `.php`) are extracted as-is and remain executable via direct HTTP access.
Weakness: CWE-434
Which versions are affected by CVE-2026-48945?
It affects 1 product.
Products include Joomlaworks K2.
How do I fix CVE-2026-48945?
No fix has been published for CVE-2026-48945 yet. Limit exposure of the affected software until one is available.
Is CVE-2026-48945 being exploited?
There is no known exploitation of CVE-2026-48945 in the wild and no public exploit code.
Other vulnerabilities in getk2.org K2 extension for Joomla
- CVE-2019-19634 class.upload.php in verot.net omits .pht from the set of dangerous file extensions
- CVE-2019-19576 Remote code execution in verot/class.upload.php
- CVE-2018-7482 Path traversal in n/a
- CVE-2026-48941 Joomla Extension - getk2.org - Unauthenticated folder delete in K2 extension for Joomla < 2.26
- CVE-2026-48943 Joomla Extension - getk2.org - Authenticated user property mass-assignment in K2 extension for Joomla < 2.26
Sources
Also known as GHSA-6mmg-h49f-fj9x.