CVE-2026-68530 (GCVE-0-2026-68530)

Vulnerability from cvelistv5 – Published: 2026-09-15 19:06 – Updated: 2026-09-15 19:39
VLAI
Title
Concrete CMS 9.0.0 through 9.5.2 is Missing Authorization on Board Instance Actions Allowed a Board Editor to Access and Delete Other Boards' Instances
Summary
Concrete CMS 9 through 9.5.2 did not perform an authorization check on several board-instance actions in the Boards area of the Dashboard. The instance details single-page controller resolved a board instance directly from an attacker-supplied instance ID and then viewed, refreshed, regenerated, or deleted it without verifying that the requester held edit_board_settings on the instance's parent board. As a result, a user granted board-edit rights on a single board could reach the instances of any other board on the site by supplying their instance IDs. The affected actions bypassed the controller's permission-checked accessor (the same accessor used by the read view, which runs canEditBoardSettings on the parent board) and validated only an action-scoped CSRF token, which is bound to the action name rather than to the target object and is therefore reusable across boards. The Concrete CMS security team gave this vulnerability a CVSS v4.0 score of 2.1 with vector CVSS:4.0/AV:N/AC:L/AT:P/PR:H/UI:N/VC:N/VI:L/VA:L/SC:N/SI:N/SA:N. Thanks Winston Crooker for reporting.
Severity
2.1 (Low)
CVSS:4.0/AV:N/AC:L/AT:P/PR:H/UI:N/VC:N/VI:L/VA:L/SC:N/SI:N/SA:N
SSVC
Exploitation: none Automatable: no Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-09-15 19:39 UTC
CWE
Assigner
ConcreteCMS CNA under the mitre root
CNA scorecard B 84/100 over 111 records in the last 180 days details
References
Impacted products
Vendor Product Version CPE status
Concrete CMS Concrete CMS Affected: 9.0.0 , ≤ 9.5.2 (git)
guessed Create a notification for this product.
Credits
winstoncrooker
Show details on NVD website
To clipboard 

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