What’s Vulnerable › Vulnerabilities

CVE-2018-9921

• Severity: medium (CVSS 5.3 v3.0)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 1.4% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2018-04-23 · updated 2026-06-17
• Weakness: CWE-22

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.

Affected products

• CMS Made Simple: 2.2.7

References

• https://gist.github.com/0xn1k5/ef4c7c7a26c7d8a803ef3a85f1000c98
• https://gist.github.com/0xn1k5/ef4c7c7a26c7d8a803ef3a85f1000c98

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