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Package polyshell-disable-file-upload
Short Description Magento 2 module that disables file custom option uploads as a temporary PolyShell mitigation.
License OSL-3.0 AFL-3.0
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Informations about the package polyshell-disable-file-upload
Ioweb_PolyshellDisableFileUpload
Temporary Magento 2 hardening module that mitigates PolyShell-style abuse until the store is upgraded and fully patched.
What it provides
The module includes three practical protections:
- A hard block for file custom option uploads.
- A narrower image-extension-only mitigation inspired by Mark Shust's workaround.
- A CLI command to scan and optionally clear files from
pub/media/custom_options.
Admin configuration
Configuration is available at:
Stores > Configuration > Security > PolyShell Protection
Disable PolyShell Uploads
When enabled, the module hard-blocks file custom option uploads:
- REST and API-driven file custom option payloads are rejected.
- Standard Magento file custom option validation is rejected too.
Use this if the store does not rely on file custom options at all.
Allow Only Image Extensions
When enabled, the module applies an image-only extension allowlist to the relevant Magento image upload path:
- rejects non-image filename extensions during image content validation
- restricts the uploader to
jpg,jpeg,gif, andpng
Use this if you want a narrower mitigation and still need image-only behavior.
Default configuration
For safety, both protections default to Yes.
CLI command
The module adds this command:
Behavior:
- Dry-run by default: lists files under
pub/media/custom_optionsthat would be removed. - Deletes only when
--forceis supplied. - Ignores
.htaccessand.gitignore.
Example:
Installation
Add the repository to your project and require the package:
Notes
- This module is a temporary mitigation, not a replacement for upgrading Magento.
- Keep web server protections on
/media/custom_options/in place even with this module installed. - If your store genuinely uses file custom options, test carefully before enabling the hard block mode.
