All vulnerabilities

Servers and applications

CVE-2021-40098

An issue was discovered in Concrete CMS through 8.5.5. Path Traversal leading to RCE via external form by adding a regular expression.

Severity
Critical 9.8
Published
27 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-2021-40098
  • CVE.org https://www.cve.org/CVERecord?id=CVE-2021-40098