Concrete 9.5.0 and below has file usage disclosure via missing permission check in Usage controller
28Vexday Risk Score
Patch soon. It has a working public exploit.
ssvc Attendcvss 6.9epss 1.5%
from disclosure to weapon0 days
Published on NVDMay 21
metasploitMay 21
exploitation probability
1.5%top 28% of all CVEs
observed exploitation
nono source reports it
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:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N
Affected products
Concrete CMS · Concrete CMS