CVE-2017-18195: Concretecms Concrete CMS

Medium severity, CVSS 5.3. EPSS: 11.1% chance of exploitation in the next 30 days.

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

• Concretecms Concrete CMS: before 8.3.0 (fixed in 8.3.0)

Published 2018-02-26. Last modified 2026-06-17.