CVE-2021-28145
Concrete CMS Cross-site Scripting via Survey Blocks
5.4
MEDIUM
CVSS 3.1
EPSS 0.20%
Description
Concrete CMS (formerly concrete5) before 8.5.5 allows remote authenticated users to conduct Cross-site Scripting (XSS) attacks via a crafted survey block. This requires at least Editor privileges.
How to fix CVE-2021-28145
To remediate CVE-2021-28145, upgrade the affected package to a fixed version below.
- Packagist/concrete5/concrete5—upgrade to 8.5.5 or later
Is CVE-2021-28145 being exploited?
Low — EPSS is 0.2%, meaning exploitation activity has not been observed at scale.
Affected packages (1)
- from 0, < 8.5.5
CVSS scores
| Source | Version | Severity | Vector |
|---|---|---|---|
| osv | CVSS 3.1 | MEDIUM5.4 | CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N |