What’s Vulnerable › Vulnerabilities

CVE-2017-18195

• Severity: medium (CVSS 5.3 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 11.1% probability of exploitation in the next 30 days
• Public exploit or detection template: yes
• Published: 2018-02-26 · updated 2026-06-17

Description

An issue was discovered in tools/conversations/view_ajax.php in Concrete5 before 8.3.0. An unauthenticated user can enumerate comments from all blog posts by POSTing requests to /index.php/tools/required/conversations/view_ajax with incremental 'cnvID' integers.

Affected products

• Concrete CMS: before 8.3.0 — fixed in 8.3.0

How to fix

Upgrade to a fixed version: Concrete CMS 8.3.0. Check the vendor advisory for mitigations.

References

• https://github.com/concrete5/concrete5/pull/6008/files
• https://github.com/concrete5/concrete5/releases/tag/8.3.0
• https://github.com/r3naissance/NSE/blob/master/http-vuln-cve2017-18195.nse
• https://www.exploit-db.com/exploits/44194/
• https://github.com/concrete5/concrete5/pull/6008/files
• https://github.com/concrete5/concrete5/releases/tag/8.3.0
• https://github.com/r3naissance/NSE/blob/master/http-vuln-cve2017-18195.nse
• https://www.exploit-db.com/exploits/44194/

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