CVE-2025-8573 Concrete CMS 9 through 9.4.2 is vulnerable to Stored XSS from Home Folder on Members Dashboard page
A rogue admin can inject malicious scripts via the Home Folder setting, leading to stored XSS attacks against users on the Members Dashboard.
- Exploited in the wild
- Not known
- Login needed
- An administrator
- Attackable
- Over the internet
- Victim action needed
- A user has to click or open something
- Fix
- Available
What is CVE-2025-8573?
CVE-2025-8573 is a low-severity cross-site scripting vulnerability in Concretecms Concrete Cms, published on 5 Aug 2025. An attacker needs administrator access to exploit it, and only if a user opens a file or follows a link.
Official description
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.
Which versions are affected by CVE-2025-8573?
2 open source packages ship an affected version, including concrete5/concrete5. It affects 1 product.
| Package | Affected | Fixed in |
|---|---|---|
concrete5/concrete5 Packagist | From 9.0.0RC1 | 9.4.3 |
concrete5/concrete5 Packagist | From 9.0.0RC1 | 9.4.3 |
Products include Concretecms Concrete Cms.
How do I fix CVE-2025-8573?
Upgrade concrete5/concrete5 to 9.4.3 or later.
Escape output for the context it lands in and set a strict Content Security Policy. Upgrading the affected component is the real fix. More about Cross-site scripting.
Is CVE-2025-8573 being exploited?
There is no known exploitation of CVE-2025-8573 in the wild and no public exploit code.
Public exploit code: 1 Exploit-DB entry.
Other vulnerabilities in Concretecms Concrete Cms
- CVE-2023-48648 Concrete CMS allows unauthorized access because directories can be created with insecure permissions
- CVE-2022-21829 Code injection in concrete CMS
- CVE-2021-22958 Server-Side Request Forgery vulnerability in concrete5
- CVE-2021-40098 Path traversal in n/a
- CVE-2026-8134 Concrete CMS Vulnerable to Relative Path Traversal
Sources
Also known as GHSA-c5xf-rmv4-j85h.