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CVE-2013-10051

46
FAUCET Score

CVE-2013-10051 is a critical remote PHP code execution vulnerability affecting InstantCMS version 1.6 and earlier. It stems from the unsafe use of eval() in the search view handler, allowing unauthenticated attackers to execute arbitrary PHP code by injecting a base64-encoded payload via a crafted HTTP GET request. This vulnerability has a CVSS score of 9.8 (Critical) due to its network-based attack vector, low attack complexity, and complete compromise of confidentiality, integrity, and availability. While not on the CISA KEV catalog, a Metasploit module exists, and it has garnered significant community discussion, indicating a high likelihood of exploitation.

Impacted Technologies

VendorProductVersion(s)CPE
<= 1.6.0CPE matchmatch criteria
cpe:2.3:a:instantcms:instantcms:*:*:*:*:*:*:*:*
>= 0, <= 1.6CPE match
cpe:2.3:a:instantcms:instantcms:*:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 4.0

9.3CRITICAL

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/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X

Attack Vector
NETWORK
Attack Complexity
LOW
Attack Requirements
NONE
Privileges Required
NONE
User Interaction
NONE
VS Confidentiality
HIGH
VS Integrity
HIGH
VS Availability
HIGH
SS Confidentiality
NONE
SS Integrity
NONE
SS Availability
NONE
Exploit Maturity
NOT_DEFINED
CvssVersion
4.0

Exploit Intelligence

EPSS Score
1.98%
Probability of exploitation in next 30 days
EPSS Percentile
78.4%
Percentile rank of EPSS score among Peer Group
As of 2026-07-26
Model: v2026.06.15
Metasploit: InstantCMS 1.6 Remote PHP Code Execution · Jun 26, 2013
This CVE's current EPSS score of 0.0198 is in the 67th percentile among its peer group of 36,835 CVEs.

Social Chatter

The average CVE in this peer group has 0.0 Twitter, 0.1 Reddit, 0.3 Bluesky, 0.3 Mastodon, and 2.4 GitHub mentions.

Media Mentions

No media coverage found for this CVE.

The average CVE in this peer group has 0.3 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.

Remediation

Remediation records are not available for this CVE.

References

packetstorm.news / files/id/122176
Third Party Advisory
raw.githubusercontent.com / rapid7/metasploit-framework/master/modules/exploits/unix/webapp/instantcms_exec.rb
Third Party Advisory
exploit-db.com / exploits/26622
Exploit
vulncheck.com / advisories/instantcms-remote-php-code-execution
Third Party Advisory