CVE-2026-6826
- Source
- https://cve.org/CVERecord?id=CVE-2026-6826
- Import Source
- https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-6826.json
- JSON Data
- https://api.osv.dev/v1/vulns/CVE-2026-6826
- Aliases
- Published
- 2026-05-21T20:55:21.936Z
- Modified
- 2026-07-15T01:49:03.726024795Z
- Severity
-
- 6.9 (Medium) CVSS_V4 - 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 CVSS Calculator
- Summary
- Concrete 9.5.0 and below has file usage disclosure via missing permission check in Usage controller
- Details
-
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.
- Database specific
{ "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/6xxx/CVE-2026-6826.json", "cwe_ids": [ "CWE-200" ], "cna_assigner": "ConcreteCMS" }- References
Affected packages
Git / github.com/concretecms/concretecms
Affected ranges
- Type
- GIT
- Repo
- https://github.com/concretecms/concretecms
- Events
-
Introduced0 Unknown introduced commit / All previous commits are affectedFixed
- Database specific
{ "extracted_events": [ { "introduced": "5.0" }, { "last_affected": "9.5.0" }, { "introduced": "0" }, { "fixed": "9.5.1" } ], "source": [ "AFFECTED_FIELD", "CPE_RANGE" ], "cpe": "cpe:2.3:a:concretecms:concrete_cms:*:*:*:*:*:*:*:*" }