CVE-2025-8573: Concretecms Concrete CMS

Medium severity, CVSS 4.8. EPSS: 0.4% chance of exploitation in the next 30 days.

Concrete CMS versions 9 through 9.4.2 are vulnerable to Stored XSS from Home Folder on Members Dashboard page.  Version 8 was not affected. A rogue admin could set up a malicious folder containing XSS to which users could be directed upon login. The Concrete CMS security team gave this vulnerability a CVSS v.4.0 score of 2.0 with vector CVSS:4.0/AV:N/AC:H/AT:N/PR:H/UI:P/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N. Thanks sealldev  (Noah Cooper) for reporting via HackerOne.

Affected products

• Concretecms Concrete CMS: from 9.0, before 9.4.3 (fixed in 9.4.3)

Published 2025-08-05. Last modified 2026-06-17.