CVE-2013-10051
InstantCMS <= 1.6 Remote PHP Code Execution
- State
- Published
- Severity
- 9.3 Critical
- Published
- Aug 1, 2025
- Updated
- May 15, 2026
- Reserved
- Aug 1, 2025
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.
Scores
| CVSS | Score | Vector | Source |
|---|---|---|---|
| 4.0 | 9.3 Critical | 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 | VulnCheck |
Weaknesses
- CWE-95 Improper Neutralization of Directives in Dynamically Evaluated Code ('Eval Injection')
Affected Products
| Product | Versions |
|---|---|
InstantCMSInstantCMS |
|
References
- https://raw.githubusercontent.com/rapid7/metasploit-framework/master/modules/exploits/unix/webapp/instantcms_exec.rbexploit
- https://www.exploit-db.com/exploits/26622exploit
- https://packetstorm.news/files/id/122176exploit
- https://www.vulncheck.com/advisories/instantcms-remote-php-code-executionthird-party-advisory
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