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CVE-2013-10051

InstantCMS <= 1.6 Remote PHP Code Execution

Published: Aug 1, 2025Updated: Oct 9, 2025 Sources: CVE List NVDCWE-95
NVD MITRE
9.8CVSSCRITICAL
EPSS Score
1.9%
Top 23.1%
CISA KEV
Not in KEV
Exploits
3 Known
Remediation
No Fix Available

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.

CVSS Vector Breakdown

AV:NAC:LPR:NUI:NS:UC:HI:HA:H
Exploitability
AV:NAttack Vector
Network
AC:LAttack Complexity
Low
PR:NPrivileges Required
None
UI:NUser Interaction
None
Scope
S:UScope
Unchanged
Impact
C:HConfidentiality
High
I:HIntegrity
High
A:HAvailability
High
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Weaknesses

CWE-95

Affected Products

instantcmsinstantcms
On-prem
Web & CMS Plugins / cms-core
InstantCMSInstantCMS
On-prem
Web & CMS Plugins / cms-core
instantcmsoss-projectWeb & CMS Pluginsaka icms2

Exploitability

3 exploit sources identified

Exploit details including PoC links, Metasploit modules, and scanner templates are available after registration.

View exploit details

References

https://packetstorm.news/files/id/122176
packetstorm.news
https://raw.githubusercontent.com/rapid7/metasploit-framework/master/modules/exploits/unix/webapp/instantcms_exec.rb
raw.githubusercontent.com
https://www.exploit-db.com/exploits/26622
exploit-db.com
and 1 more references View all →

Timeline

Published
Aug 1, 2025
Last Updated
Oct 9, 2025

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