All vulnerabilities

Servers and applications

CVE-2021-36766

Concrete5 through 8.5.5 deserializes Untrusted Data. The vulnerable code is located within the controllers/single_page/dashboard/system/environment/logging.php Logging::update_logging() method. User input passed through the logFile request parameter is not properly sanitized before being used in a call to the file_exists() PHP function. This can be exploited by malicious users to inject…

Severity
High 7.2
Published
30 Jul 2021
Last changed
17 Jun 2026
Added to UpHeron
1 Nov 2026
Fixed in
8.5.6
Sources
NVD

Affected software

SoftwareAffected versions
Concrete CMSServers and applications · cpe:a:concretecms:concrete_cms
  • Every version before 8.5.6

References

  • NVD https://nvd.nist.gov/vuln/detail/CVE-2021-36766
  • CVE.org https://www.cve.org/CVERecord?id=CVE-2021-36766