CVE-2021-40100

Description

An issue was discovered in Concrete CMS through 8.5.5. Stored XSS can occur in Conversations when the Active Conversation Editor is set to Rich Text.

Category

5.4
CVSS
Severity: Medium
CVSS 3.1 •
CVSS 2.0 •
EPSS 0.42%
Vendor Advisory concretecms.org
Affected: n/a n/a
Published at:
Updated at:

References

Link Tags
https://hackerone.com/reports/616770 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-2021-40100?
CVE-2021-40100 has been scored as a medium severity vulnerability.
How to fix CVE-2021-40100?
To fix CVE-2021-40100, 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-2021-40100 being actively exploited in the wild?
As for now, there are no information to confirm that CVE-2021-40100 is being actively exploited. According to its EPSS score, there is a ~0% probability that this vulnerability will be exploited by malicious actors in the next 30 days.
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