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.
ProviderTypeBase ScoreAtk. VectorAtk. ComplexityPriv. RequiredVector
NISTPrimary
7.2 HIGH
NETWORK
LOW
HIGH
CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H
Base Score
CVSS 3.x
EPSS Score
Percentile: Unknown
Affected Products (NVD)
VendorProductVersion
concretecmsconcrete_cms
𝑥
≤ 8.5.5
𝑥
= Vulnerable software versions
References
https://documentation.concretecms.org/developers/introduction/version-history/856-release-notes
https://hackerone.com/reports/982130
https://documentation.concretecms.org/developers/introduction/version-history/856-release-notes
https://hackerone.com/reports/982130