CVE-2018-15882 File upload in n/a
Attackers can upload malicious phar files to Joomla due to inadequate input filtering, potentially leading to remote code execution.
- 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-2018-15882?
CVE-2018-15882 is a critical vulnerability in Joomla Joomla\!, published on 29 Aug 2018. An attacker can exploit it over the internet without logging in, with no action from the victim.
Official description
An issue was discovered in Joomla! before 3.8.12. Inadequate checks in the InputFilter class could allow specifically prepared phar files to pass the upload filter.
Weakness: CWE-434
Which versions are affected by CVE-2018-15882?
It affects 1 product.
Products include Joomla Joomla\!.
How do I fix CVE-2018-15882?
No fix has been published for CVE-2018-15882 yet. Limit exposure of the affected software until one is available.
Is CVE-2018-15882 being exploited?
There is no known exploitation of CVE-2018-15882 in the wild and no public exploit code.
Other vulnerabilities in Joomla Joomla\!
- CVE-2016-10033 PHPMailer Command Injection
- CVE-2023-23752 Joomla! Improper Access Control
- CVE-2026-48902 Joomla! Core - [20260518] - Transport encryption downgrade for password and username reset links
- CVE-2025-25226 [20250401] - Joomla Framework - SQL injection vulnerability in quoteNameStr method of Database package
- CVE-2022-23795 [20220303] - Core - User row are not bound to a authentication mechanism
Sources
Also known as GHSA-w6c5-p2h3-rcm3.