FoF Pretty Mail 1.1.2 Local File Inclusion

Exploit Title: FoF Pretty Mail 1.1.2 Extension for Flarum Local FileInclusion (LFI)Date: 03/28/2024Exploit Author: Chokri HammediVendor Homepage: https://flarum.org/Software Link: https://github.com/FriendsOfFlarum/pretty-mailVersion: 1.1.2Tested on: Windows XPCVE: N/ADescription:The FoF Pretty Mail extension for Flarum is vulnerable to Local FileInclusion (LFI) due to the unsafe handling of file paths in the emailtemplate. An attacker with administrative access can exploit thisvulnerability to include sensitive files from the server's file system inthe email content, potentially leading to information disclosure.Steps to Reproduce:Log in as an administrator on the Flarum forum.Navigate to the FoF Pretty Mail extension settings.Edit the email default template and insert the following payload at the endof the template:{{ include('/etc/passwd') }}Save the changes to the email template.Trigger any action that sends an email, such as user registration orpassword reset.The recipient of the email will see the contents of the included file (inthis case, /etc/passwd) in the email content.