Advisory by Netsparker (now Invicti)
Name: LFI Vulnerability in Osclass
Affected Software: OsClass
Affected Versions: 3.4.1 and possibly below
Vendor Homepage:
Vulnerability Type: Local File Inclusion
Severity: Critical
CVE-ID: CVE-2014-6308
Invicti Advisory Reference: NS-14-031

Several local file inclusion vulnerability where discovered in Osclass, an open source project that allows you to create a classifieds sites.

Technical Details
Proof of Concept URLs for LFI in OsClass:

For more information on local file inclusion vulnerability read the article Local File Inclusion.

Advisory Timeline
03/09/2014 - First Contact
03/09/2014 - Vulnerability fixed:

Credits & Authors

These issues have been discovered by Omar Kurt while testing Invicti Web Application Security Scanner.

About Netsparker 

Netsparker can find and report security issues and vulnerabilities such as SQL Injection and Cross-site Scripting (XSS) in all websites and web applications regardless of the platform and the technology they are built on. Invicti’s unique detection and exploitation techniques allows it to be dead accurate in reporting hence it's the first and the only False Positive Free web application security scanner.