Security Patch

This patch fixes a fairly major security flaw in e107's upload handler.

This patch fixes a fairly major security flaw in e107's upload handler. Extract the file and upload it to your e107_handlers/ directory, overwriting the old file.

https://e107.org/e107_files/upload_handler_.7.8_fixed.zip

Update: Fixed the is_boolean() problem in the zip, and given it a new file name to appease the complainers