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GHSA-xpgc-7vc2-8725medium6.3

Concrete CMS is vulnerable to IDOR

Impact

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.

Source excerpt · OSV

Affected packages

Start with the recorded fix for your release branch. Check your installed version and test compatibility before upgrading. Fixing this advisory does not rule out other vulnerabilities in the release.

concrete5/concrete5 Packagist
Affected rangeRecorded fix
Earlier releases before 9.5.1Ecosystem versions9.5.1

Version evidence: OSV · GHSA-xpgc-7vc2-8725

View original version evidence (89 explicit versions)

Original source 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.

References