CVE-2022-30120

Severity: medium (CVSS 6.1 v3.1)
Exploited in the wild: not listed in CISA KEV
EPSS: 1.0% probability of exploitation in the next 30 days
Public exploit or detection template: none known
Published: 2022-06-24 · updated 2026-06-17
Weakness: CWE-79

Description

XSS in /dashboard/blocks/stacks/view_details/ - old browsers only. When using an older browser with built-in XSS protection disabled, insufficient sanitation where built urls are outputted can be exploited for Concrete 8.5.7 and below as well as Concrete 9.0 through 9.0.2 to allow XSS. This cannot be exploited in modern-day web browsers due to an automatic input escape mechanism. Concrete CMS Security team ranked this vulnerability 3.1with CVSS v3.1 Vector AV:N/AC:H/PR:N/UI:R/S:U/C:N/I:L/A:N. Sanitation has been added where built urls are output. Credit to Credit to Bogdan Tiron from FORTBRIDGE (https://www.fortbridge.co.uk/ ) for reporting

Affected products

Concrete CMS: before 8.5.8; from 9.0.0 before 9.1.0 — fixed in 8.5.8, 9.1.0

How to fix

Upgrade to a fixed version: Concrete CMS 8.5.8, 9.1.0. Check the vendor advisory for mitigations.

References

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