All vulnerabilities

Servers and applications

CVE-2021-22966

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…

Severity
High 8.8
Published
19 Nov 2021
Last changed
17 Jun 2026
Added to UpHeron
1 Nov 2026
Fixed in
8.5.7
Sources
NVD

Affected software

SoftwareAffected versions
Concrete CMSServers and applications · cpe:a:concretecms:concrete_cms
  • Every version before 8.5.7

References

  • NVD https://nvd.nist.gov/vuln/detail/CVE-2021-22966
  • CVE.org https://www.cve.org/CVERecord?id=CVE-2021-22966