CVE-2013-10051

CRITICAL

InstantCMS < 1.6 - Remote PHP Code Execution via Search View Handler

Title source: llm
STIX 2.1

Exploitation Summary

EIP tracks 2 public exploits for CVE-2013-10051. PoCs published by Metasploit, AkaStep, including Metasploit module exploits/unix/webapp/instantcms_exec.

AI-analyzed exploit summary This Metasploit module exploits an arbitrary PHP code execution vulnerability in InstantCMS 1.6 due to unsafe use of eval(). It sends a malicious payload via HTTP headers to achieve remote code execution.

Description

A remote PHP code execution vulnerability exists in InstantCMS version 1.6 and earlier due to unsafe use of eval() within the search view handler. Specifically, user-supplied input passed via the look parameter is concatenated into a PHP expression and executed without proper sanitation. A remote attacker can exploit this flaw by sending a crafted HTTP GET request with a base64-encoded payload in the Cmd header, resulting in arbitrary PHP code execution within the context of the web server.

Exploits (2)

exploitdb WORKING POC VERIFIED
by Metasploit · rubyremotephp
https://www.exploit-db.com/exploits/26622

This Metasploit module exploits an arbitrary PHP code execution vulnerability in InstantCMS 1.6 due to unsafe use of eval(). It sends a malicious payload via HTTP headers to achieve remote code execution.

Classification
Working Poc 100%
Attack Type
Rce
Complexity
Trivial
Reliability
Reliable
Target: InstantCMS 1.6
No auth needed
Prerequisites: Network access to the target · InstantCMS 1.6 installation
devstral-2 · analyzed Feb 16, 2026 Full analysis →
metasploit WORKING POC EXCELLENT
by AkaStep · rubypocphp
https://github.com/rapid7/metasploit-framework/blob/master/modules/exploits/unix/webapp/instantcms_exec.rb

This Metasploit module exploits a PHP code execution vulnerability in InstantCMS 1.6 via unsafe use of eval(). It leverages base64-encoded payloads passed through HTTP headers to achieve remote command execution.

Classification
Working Poc 100%
Attack Type
Rce
Complexity
Trivial
Reliability
Reliable
Target: InstantCMS 1.6 and prior
No auth needed
Prerequisites: Network access to the target InstantCMS instance
devstral-2 · analyzed Feb 16, 2026 Full analysis →

Scores

CVSS v3 9.8
EPSS 0.8414
EPSS Percentile 99.3%
Attack Vector NETWORK
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

CISA SSVC

Vulnrichment
Exploitation poc
Automatable yes
Technical Impact total

Details

CWE
CWE-95
Status published
Products (2)
InstantCMS/InstantCMS < 1.6
instantcms/instantcms < 1.6.0
Published Aug 01, 2025
Tracked Since Feb 18, 2026