~ / search / GHSA-4g7q-44qp-cc5c

GHSA-4g7q-44qp-cc5c

Concrete CMS is vulnerable to unauthenticated file usage disclosure

Source: GitHub Advisory Database (reviewed) Moderate CVE-2026-6826

Packages

EcosystemPackageAffectedFixed in
Packagist concrete5/concrete5 < 9.5.1 9.5.1

Details

As written in the advisory (Markdown source, shown as plain text).

Concrete CMS 9.5.0 and below  is vulnerable to unauthenticated file usage disclosure via missing permission check in the usage controller.  Any unauthenticated visitor can request /ccm/system/dialogs/file/usage/{fID} with any file ID and receive a list of every page that references that file, including page IDs, handles, and full URLs. This includes pages that are otherwise restricted by permissions. Concrete CMS thanks Eldudareeno for reporting this issue.

References

External links from the advisory. They lead to third-party sites.