CVE-2018-9921

Name: CVE-2018-9921
Creator: NVD / NIST
Published: 2018-04-23T18:29:01.18+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

UnknownEPSS 1.50%

Last modified Jun 17, 2026

CVE-2018-9921 is a vulnerability of currently unknown severity. In CMS Made Simple 2.2.7, a Directory Traversal issue makes it possible to determine the existence of files and directories outside the web-site installation directory, and determine whether a file has contents matching a specified checksum. The attack uses an admin/checksum.php?__c= request.. EPSS estimates a 1.50% chance of exploitation in the next 30 days.

Description

In CMS Made Simple 2.2.7, a Directory Traversal issue makes it possible to determine the existence of files and directories outside the web-site installation directory, and determine whether a file has contents matching a specified checksum. The attack uses an admin/checksum.php?__c= request.

Metrics

EPSS Probability

1.50%

70.9th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

CWE-22

Affected Software

Vendor	Product	Versions
Cmsmadesimple	Cms Made Simple	2.2.7

References

https://gist.github.com/0xn1k5/ef4c7c7a26c7d8a803ef3a85f1000c98Third Party Advisory
https://gist.github.com/0xn1k5/ef4c7c7a26c7d8a803ef3a85f1000c98Third Party Advisory

Timeline

Published: Apr 23, 2018
Last Modified: Jun 17, 2026
Status: Modified

Frequently Asked Questions

What is CVE-2018-9921?

How severe is CVE-2018-9921?

Severity scoring for CVE-2018-9921 is pending analysis. The EPSS model estimates a 1.50% probability of exploitation in the next 30 days.

How do I fix CVE-2018-9921?

Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

Are you affected by CVE-2018-9921?

Run a free Strix scan to check your systems for this vulnerability.

Scan your code now

Source: NVD / NIST