{"id":"CVE-2021-22966","details":"Privilege escalation from Editor to Admin using Groups in Concrete CMS versions 8.5.6 and below. If a group is granted \"view\" permissions on the bulkupdate page, then users in that group can escalate to being an administrator with a specially crafted curl. Fixed by adding a check for group permissions before allowing a group to be moved. Concrete CMS Security team CVSS scoring: 7.1 AV:N/AC:H/PR:L/UI:R/S:U/C:H/I:H/A:HCredit for discovery: \"Adrian Tiron from FORTBRIDGE ( https://www.fortbridge.co.uk/ )\"This fix is also in Concrete version 9.0.0","aliases":["GHSA-j4mv-2rv7-v2j9"],"modified":"2026-04-10T04:30:16.262667Z","published":"2021-11-19T19:15:08.327Z","references":[{"type":"ADVISORY","url":"https://documentation.concretecms.org/developers/introduction/version-history/857-release-notes"},{"type":"REPORT","url":"https://hackerone.com/reports/1362747"}],"affected":[{"ranges":[{"type":"GIT","repo":"https://github.com/concretecms/concretecms","events":[{"introduced":"0"},{"fixed":"96a2e7293f2168be9e3530fdfd551ea6005bd19a"}],"database_specific":{"versions":[{"introduced":"0"},{"fixed":"8.5.7"}]}}],"versions":["5.7.0","5.7.0.1","5.7.0.3","5.7.0.4","5.7.1","5.7.2","5.7.2.1","5.7.3","5.7.3.1","5.7.4.1","5.7.5.2","5.7.5.5","5.7.5.6","5.7.5.7","8.1.0","8.2.0","8.2.0RC2","8.2.1","8.3.1","8.4.1","8.5.6"],"database_specific":{"source":"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2021-22966.json"}}],"schema_version":"1.7.5","severity":[{"type":"CVSS_V3","score":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H"}]}