CVE-2026-6826
CVE-2026-6826 · Concrete 9.5.0 and below has file usage disclosure via missing permission check in Usage controller
This page contains facts from public vulnerability sources. Check the original advisory before updating.
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.The Concrete CMS security team gave this vulnerability a CVSS v.4.0 score of 6.9 with vector CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N. Thanks Eldudareeno for reporting.
CVSS 6.9 · Medium · EPSS 1.5% · Public exploit · Fix available
- Published
- Updated
Stack: php
Affected products and versions
concrete cms
- Versions
- ≥ 5.0, ≤ 9.5.0: Affected (git)
No fix published
concrete5/concrete5 Packagist
- Versions
- 8.0
- 8.0.1
- 8.0.2
- 8.0.3
- 8.1.0
- 8.2.0
- 8.2.0RC2
- 8.2.1
- 8.3.0
- 8.3.1
- 8.3.2
- 8.4.0
- 8.4.0RC3
- 8.4.0RC4
- 8.4.1
- 8.4.2
- 8.4.3
- 8.4.4
- 8.4.5
- 8.5.0
- 8.5.0RC1
- 8.5.0RC2
- 8.5.1
- 8.5.10
- 8.5.11
- 8.5.12
- 8.5.13
- 8.5.14
- 8.5.15
- 8.5.16
- 8.5.17
- 8.5.18
- 8.5.19
- 8.5.2
- 8.5.20
- 8.5.21
- 8.5.3
- 8.5.4
- 8.5.5
- 8.5.6
- 8.5.6RC1
- 8.5.7
- 8.5.8
- 8.5.9
- 9.0.0
- 9.0.0RC1
- 9.0.0RC3
- 9.0.0RC4
- 9.0.1
- 9.0.2
- 9.1.0
- 9.1.1
- 9.1.2
- 9.1.3
- 9.2.0
- 9.2.0RC2
- 9.2.1
- 9.2.2
- 9.2.3
- 9.2.4
- 9.2.5
- 9.2.6
- 9.2.7
- 9.2.8
- 9.2.9
- 9.3.0
- 9.3.1
- 9.3.2
- 9.3.3
- 9.3.4
- 9.3.5
- 9.3.6
- 9.3.7
- 9.3.8
- 9.3.9
- 9.4.0
- 9.4.0RC1
- 9.4.0RC2
- 9.4.1
- 9.4.2
- 9.4.3
- 9.4.4
- 9.4.5
- 9.4.6
- 9.4.7
- 9.4.8
- 9.5.0
- 9.5.0RC1
- 9.5.0RC2
- Affected ranges
- ECOSYSTEM: < 9.5.1
Update to 9.5.1