CVE-2026-8237

CVE-2026-8237 CVE-2026-8237 is an Insecure Direct Object Reference IDOR vulnerability caused by missing authorization checks in Concrete CMS 9.5.0 and earlier.The flaw exists in the /ccm/frontend/conversations/messagedetail endpoint, which returns the full contents of conversation messages based...

CVE-2026-8237

Concrete CMS 9.5.0 and below is vulnerable to IDOR. The "/ccm/frontend/conversations/messagedetail" 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...

CVE-2026-8237 Concrete CMS 9.5.0 and below is vulnerable to IDOR in the`/ccm/frontend/conversations/message_detail` endpoint

Concrete CMS 9.5.0 and below is vulnerable to IDOR. The /ccm/frontend/conversations/messagedetail 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 th...

CVE-2026-8237 Concrete CMS 9.5.0 and below is vulnerable to IDOR in the`/ccm/frontend/conversations/message_detail` endpoint

Concrete CMS 9.5.0 and below is vulnerable to IDOR. The /ccm/frontend/conversations/messagedetail 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 th...

CVE-2026-8237: Missing Authorization

Concrete CMS 9.5.0 and below is vulnerable to IDOR. The /ccm/frontend/conversations/messagedetail 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 th...