CVE-2021-3111

Public Exploit

Description

The Express Entries Dashboard in Concrete5 8.5.4 allows stored XSS via the name field of a new data object at an index.php/dashboard/express/entries/view/ URI.

Category

4.8
CVSS
Severity: Medium
CVSS 3.1 •
CVSS 2.0 •
EPSS 0.61%
Vendor Advisory concrete5.org Vendor Advisory concrete5.org
Affected: n/a n/a
Published at:
Updated at:

References

Link Tags
https://documentation.concrete5.org/developers/introduction/version-history release notes vendor advisory
https://github.com/Quadron-Research-Lab/CVE/blob/main/CVE-2021-3111.pdf third party advisory exploit
http://packetstormsecurity.com/files/161600/Concrete5-8.5.4-Cross-Site-Scripting.html exploit vdb entry third party advisory
https://documentation.concrete5.org/developers/introduction/version-history/855-release-notes release notes vendor advisory
http://packetstormsecurity.com/files/161997/Concrete5-8.5.4-Cross-Site-Scripting.html vdb entry third party advisory

Frequently Asked Questions

What is the severity of CVE-2021-3111?
CVE-2021-3111 has been scored as a medium severity vulnerability.
How to fix CVE-2021-3111?
To fix CVE-2021-3111, 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-2021-3111 being actively exploited in the wild?
It is possible that CVE-2021-3111 is being exploited or will be exploited in a near future based on public information. According to its EPSS score, there is a ~1% probability that this vulnerability will be exploited by malicious actors in the next 30 days.
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