CVE-2026-8237 Scanner
CVE-2026-8237 Scanner - Insecure Direct Object References (IDOR) vulnerability in Concrete CMS
Used 2.8k times · 5.9k assets checked · domain, subdomain, ipv4
CVE
CVE-2026-8237
6.3
CVSSmedium
Exploitable remotely over the internet · no authentication required.
Description
Concrete CMS 9.5.0 and below is vulnerable to IDOR. The `/ccm/frontend/conversations/message_detail` endpoint returns the full content of any conversation message. An unauthenticated attacker can enumerate all conversation messages, including messages from restricted pages, member-only areas, and the moderation queue. File attachments with download URLs are also exposed. The Concrete CMS security team gave this vulnerability a CVSS v.4.0 score of 6.3 with Vector CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N. Thanks Eldudareeno for reporting.
Attack Vector
Network
Privileges Req.
None
User Interaction
None
concrete cms
Updated Sep 18, 2026View on NVD →
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CVE history: concrete cms
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