InstantCMS <= 1.6 Remote PHP Code Execution
63Vexday Risk Score
Patch soon. It has a working public exploit.
ssvc Attendcvss 9.3epss 2.0%
from disclosure to weapon0 days
Published on NVDAug 1
metasploitJun 26
exploitation probability
2.0%top 21% of all CVEs
observed exploitation
nono source reports it
3 public exploit(s)
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:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N
Affected products
InstantCMS · InstantCMSpublic PoCs found — 3
cve_referencepacketstorm.news/files/id/122176unverifiedcve_referenceraw.githubusercontent.com/rapid7/metasploit-framework/master/modules/exploits/unix/webapp/instantcms_exec.rbunverifiedcve_referencewww.exploit-db.com/exploits/26622unverified⚠ Public resources, to assess the exposure of systems you control or are authorized to test. Test only with authorization.