Description
WordPress relies mostly on name-based validation when deciding whether or not to allow a particular file, leaving the door open for various kinds of attacks.
Lord of the Files adds to this content-based validation and sanitizing, making sure that files are what they say they are and safe for inclusion on your site.
The main features include:
- Robust real filetype detection;
- Full MIME alias mapping;
- SVG sanitization (if SVG uploads have been independently allowed);
- File upload validation debugger;
- Fixes issues related to #40175 that have been present since WordPress
4.7.1
. - Fixes ambiguous media extensions #40921
Requirements
- WordPress 5.2 or later.
- PHP 7.3 or later.
dom
PHP extension.fileinfo
PHP extension.mbstring
PHP extension.xml
PHP extension.
Please note: it is not safe to run WordPress atop a version of PHP that has reached its End of Life. Future releases of this plugin might, out of necessity, drop support for old, unmaintained versions of PHP. To ensure you continue to receive plugin updates, bug fixes, and new features, just make sure PHP is kept up-to-date. π
Privacy Policy
This plugin does not make use of or collect any βPersonal Dataβ.
Screenshots
Installation
Nothing fancy! You can use the built-in installer on the Plugins page or extract and upload the blob-mimes
folder to your plugins directory via FTP.
To install this plugin as Must-Use, download, extract, and upload the blob-mimes
folder to your mu-plugins
directory and follow the third example listed under Caveats; the main file for this plugin is blob-mimes/index.php
.
Please note: MU Plugins are removed from the usual update-checking process, so you will need to handle all future updates manually.
FAQ
-
Does this require any theme or config changes?
-
This plugin is intended to be an activate-and-forget sort of affair for most users. All features are enabled by default.
But if you’re a developer or system administrator, you might take a peek at
Tools > File Validation Reference
for a list of public filters you can hook into to change things up, andSettings > File Settings
for global configuration overrides. -
This has mostly helped but I am still having trouble with one file…
-
While this plugin extends MIME alias handling more than 20-fold(!), we are still busy tracking down all the edge cases.
Please go to
Tools > Debug File Validation
and post the output from that page into a new support ticket for this plugin.We’ll gladly see if we can cook up a fix or workaround!
-
Does this plugin enable SVG support?
-
No. This plugin does not modify your site’s allowed upload types (see e.g. upload_mimes for that). However if SVGs are otherwise enabled for your site, this plugin will sanitize them at the upload stage to make sure they do not contain any dangerous exploits.
There are a number of SVG-related filters that can be used to modify the sanitization behavior. Take a look at
Tools > File Validation Reference
for more information.If you find the filters too aggressive, add
const LOTF_NO_SANITIZE_SVGS = true;
to yourwp-config.php
to disable the extra sanitizing.
Reviews
Contributors & Developers
“Lord of the Files: Enhanced Upload Security” is open source software. The following people have contributed to this plugin.
ContributorsTranslate “Lord of the Files: Enhanced Upload Security” into your language.
Interested in development?
Browse the code, check out the SVN repository, or subscribe to the development log by RSS.
Changelog
1.3.21
- [Misc] Update MIME database.
1.3.20
- [Misc] Update MIME database.
1.3.19
- [Misc] Update MIME database.
1.3.18
- [Misc] Update MIME database.
1.3.17
- [Misc] Update MIME database.