CVE-2019-19634 class.upload.php in verot.net omits .pht from the set of dangerous file extensions
An attacker can upload malicious files with .pht extensions to execute arbitrary code due to missing extension validation in the class.upload.php library.
- 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-2019-19634?
CVE-2019-19634 is a critical vulnerability in n/a, published on 17 Dec 2019. An attacker can exploit it over the internet without logging in, with no action from the victim.
Official description
class.upload.php in verot.net class.upload through 1.0.3 and 2.x through 2.0.4, as used in the K2 extension for Joomla! and other products, omits .pht from the set of dangerous file extensions, a similar issue to CVE-2019-19576.
Weakness: CWE-434
Which versions are affected by CVE-2019-19634?
4 open source packages ship an affected version, including verot/class.upload.php. It affects 2 products.
| Package | Affected | Fixed in |
|---|---|---|
verot/class.upload.php Packagist | All versions to 1.0.3 | None |
verot/class.upload.php Packagist | All versions to 1.0.3 | None |
verot/class.upload.php Packagist | From 2.0.0 to 2.0.4 | None |
verot/class.upload.php Packagist | From 2.0.0 to 2.0.4 | None |
Products include Joomlaworks K2, Verot Project Verot.
How do I fix CVE-2019-19634?
No fix has been published for CVE-2019-19634 yet. Limit exposure of the affected software until one is available.
Is CVE-2019-19634 being exploited?
There is no known exploitation of CVE-2019-19634 in the wild and no public exploit code.
Public exploit code: 1 proofs of concept on GitHub.
Other vulnerabilities in n/a
- 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
- CVE-2026-48944 Joomla Extension - getk2.org - Exposure of sensitive files via attachment copy in K2 extension for Joomla < 2.26
Sources
Also known as GHSA-2gc7-w4hw-rr2m.