# CVE-2013-10051

## Summary

- **CVE ID:** CVE-2013-10051
- **Severity:** CRITICAL
- **CVSS Score:** 9.3 (CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N)
- **CWE:** CWE-95
- **Published:** Aug 1, 2025
- **Last Modified:** May 15, 2026

## 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.

## Affected Products

- InstantCMS — InstantCMS (*)
- InstantCMS — InstantCMS (0)

## References

- [CNA](https://raw.githubusercontent.com/rapid7/metasploit-framework/master/modules/exploits/unix/webapp/instantcms_exec.rb)
- [CNA](https://www.exploit-db.com/exploits/26622)
- [CNA](https://packetstorm.news/files/id/122176)
- [CNA](https://www.vulncheck.com/advisories/instantcms-remote-php-code-execution)

## Exploitation Prediction (EPSS)

- **EPSS Score:** 75.81%
- **EPSS Percentile:** 98.9

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_Exported from OnDuty AI Vulnerability Intelligence on 2026-09-18._