CVE-2021-3111

low-risk
Published 2021-01-08

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.

Do I need to act?

-
0.61% chance of exploitation
EPSS score — low exploit probability
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Not on CISA KEV list
No confirmed active exploitation reported to CISA
!
1 public exploit available
49721
?
Patch status unknown
Check vendor advisories for fix availability and mitigation guidance
4
CVSS 4.8/10 Medium
NETWORK / LOW complexity

Affected Products (1)

Affected Vendors

Concretecms

References (10)

Exploit http://packetstormsecurity.com/files/161600/Concrete5-8.5.4-Cross-Site-Scripting...
Third Party Advisory http://packetstormsecurity.com/files/161997/Concrete5-8.5.4-Cross-Site-Scripting...
Release Notes https://documentation.concrete5.org/developers/introduction/version-history
Release Notes https://documentation.concrete5.org/developers/introduction/version-history/855-...
Exploit https://github.com/Quadron-Research-Lab/CVE/blob/main/CVE-2021-3111.pdf
Exploit http://packetstormsecurity.com/files/161600/Concrete5-8.5.4-Cross-Site-Scripting...
Third Party Advisory http://packetstormsecurity.com/files/161997/Concrete5-8.5.4-Cross-Site-Scripting...
Release Notes https://documentation.concrete5.org/developers/introduction/version-history
Release Notes https://documentation.concrete5.org/developers/introduction/version-history/855-...
Exploit https://github.com/Quadron-Research-Lab/CVE/blob/main/CVE-2021-3111.pdf
26
/ 100
low-risk
Severity 19/34 · Moderate
Exploitability 2/34 · Minimal
Exposure 5/34 · Minimal