CVE-2021-26031 [20210402] - Core - Inadequate filters on module layout settings
Inadequate filters in Joomla module layout settings allow attackers to perform Local File Inclusion, potentially reading sensitive server files.
- 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-2021-26031?
CVE-2021-26031 is a medium-severity path traversal vulnerability in Joomla Joomla\!, published on 14 Apr 2021. 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! 3.0.0 through 3.9.25. Inadequate filters on module layout settings could lead to an LFI.
Which versions are affected by CVE-2021-26031?
1 open source package ship an affected version, including joomla. It affects 1 product.
| Package | Affected | Fixed in |
|---|---|---|
joomla Bitnami | From 3.0.0 to 3.9.25 | None |
Products include Joomla Joomla\!.
How do I fix CVE-2021-26031?
No fix has been published for CVE-2021-26031 yet. Limit exposure of the affected software until one is available.
Upgrade, and resolve every user-supplied path against an allowed base folder before opening it. More about Path traversal.
Is CVE-2021-26031 being exploited?
There is no known exploitation of CVE-2021-26031 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 BIT-joomla-2021-26031, GHSA-97xx-6pvj-86r8.