UpHeron
All vulnerabilities

Servers and applications

CVE-2021-40099

An issue was discovered in Concrete CMS through 8.5.5. Fetching the update json scheme over HTTP leads to remote code execution.

Severity
High 7.2
Published
24 Sept 2021
Last changed
17 Jun 2026
Added to UpHeron
1 Nov 2026
Sources
NVD

Affected software

SoftwareAffected versions
Concrete CMSServers and applications · cpe:a:concretecms:concrete_cms
  • Every version up to 8.5.5

References

  • NVD https://nvd.nist.gov/vuln/detail/CVE-2021-40099
  • CVE.org https://www.cve.org/CVERecord?id=CVE-2021-40099