CVE-2021-40099

Description

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

7.2

CVSS

Severity: High

CVSS 3.1 •

CVSS 2.0 •

EPSS 3.58% Top 15%

Vendor Advisory concretecms.org

Affected: n/a n/a

References

Link	Tags
https://hackerone.com/reports/982130	third party advisory permissions required
https://documentation.concretecms.org/developers/introduction/version-history/856-release-notes	release notes vendor advisory

Frequently Asked Questions

What is the severity of CVE-2021-40099?: CVE-2021-40099 has been scored as a high severity vulnerability.
How to fix CVE-2021-40099?: To fix CVE-2021-40099, make sure you are using an up-to-date version of the affected component(s) by checking the vendor release notes. As for now, there are no other specific guidelines available.
Is CVE-2021-40099 being actively exploited in the wild?: It is possible that CVE-2021-40099 is being exploited or will be exploited in a near future based on public information. According to its EPSS score, there is a ~4% probability that this vulnerability will be exploited by malicious actors in the next 30 days.

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