Remote PHP Code Execution Vulnerability in InstantCMS Web Application
CVE-2013-10051
Key Information:
- Vendor
Instantcms
- Status
- Vendor
- CVE Published:
- 1 August 2025
Badges
What is CVE-2013-10051?
A remote PHP code execution flaw exists in InstantCMS due to improper handling of user input in the search view handler. The vulnerability arises from using the eval() function with concatenated user-supplied data without sufficient sanitation. An attacker can exploit this weakness by sending a specially crafted HTTP GET request containing a base64-encoded payload in the Cmd header. This exploitation can lead to arbitrary code being executed on the web server, which poses significant risks to the security and integrity of the affected web application.
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Affected Version(s)
InstantCMS * <= 1.6
Exploit Proof of Concept (PoC)
PoC code is written by security researchers to demonstrate the vulnerability can be exploited. PoC code is also a key component for weaponization which could lead to ransomware.
References
EPSS Score
75% chance of being exploited in the next 30 days.
CVSS V4
Timeline
- 🟡
Public PoC available
- 👾
Exploit known to exist
Vulnerability published
Vulnerability Reserved