CVE-2012-10034 ClanSphere 2011.3 Local File Inclusion via cs_lang Cookie

High 8.7 Published 5 Aug 2025 Updated 7 Apr 2026

Attackers can read arbitrary files outside the web root via directory traversal in the cs_lang cookie, potentially exposing sensitive system data.

Exploited in the wild: Not known
Login needed: Not needed
Attackable: Over the internet
Victim action needed: Not needed
Fix: None listed

What is CVE-2012-10034?

CVE-2012-10034 is a high-severity path traversal vulnerability in ClanSphere, published on 5 Aug 2025. An attacker can exploit it over the internet without logging in, with no action from the victim.

Official description

ClanSphere 2011.3 is vulnerable to a local file inclusion (LFI) flaw due to improper handling of the cs_lang cookie parameter. The application fails to sanitize user-supplied input, allowing attackers to traverse directories and read arbitrary files outside the web root. The vulnerability is further exacerbated by null byte injection (%00) to bypass file extension checks.

Weakness: CWE-22

Which versions are affected by CVE-2012-10034?

It affects 1 product.

Products include Csphere Clansphere.

How do I fix CVE-2012-10034?

No fix has been published for CVE-2012-10034 yet. Limit exposure of the affected software until one is available.

Upgrade, and resolve every user-supplied path against an allowed base folder before opening it. More about Path traversal.

Is CVE-2012-10034 being exploited?

It is not confirmed as exploited in the wild, but public exploit code for CVE-2012-10034 exists.

Public exploit code: 1 Metasploit module.

Sources

Also known as GHSA-4m36-5v2m-v77q.