Concrete CMS 9 through 9.4.2 is vulnerable to Stored XSS from Home Folder on Members Dashboard page
Key facts
- Attack vector
- Network
- Privileges required
- High
- User interaction
- Passive
- Attack complexity
- High
- Attack requirements
- None
- Impact type
- Cross-site scripting
- Confidentiality · integrity · availability
- Low · None · None
- Fix status
- Fixed
Attack profile from CVSS 4.0 · CNA. Fix status from CNA and GitHub. Impact type from CWE-79.
Summary
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.
Why it matters now
SSVC decision points
CISA ADP · SSVC 2.0.3
- Exploitation
- None
- Automatable
- No
- Technical impact
- Partial
The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.
Affected products
| Vendor | Product | Affected versions | Fixed in | Status | Source |
|---|---|---|---|---|---|
| Concrete CMS | Concrete CMS | 9.0.0 to before 9.4.3 | 9.4.3 | Patch available | CNA |
| — | concrete5/concrete5 (Packagist) | 9.0.0RC1 to before 9.4.3 | 9.4.3 | Patch available | GHSA-c5xf-rmv4-j85h |
- Concrete CMS VendorConcrete CMS Affected 9.0.0 to before 9.4.3 Fixed in 9.4.3 Patch available CNA
- concrete5/concrete5 (Packagist) Vendor— Affected 9.0.0RC1 to before 9.4.3 Fixed in 9.4.3 Patch available GHSA-c5xf-rmv4-j85h
CPE configurations NVD · 1
| CPE | Versions | Role | Vendor |
|---|---|---|---|
| cpe:2.3:a:concretecms:concrete_cms:*:*:*:*:*:*:*:* | 9.0 to before 9.4.3 | Vulnerable | Concrete CMS |
- cpe:2.3:a:concretecms:concrete_cms:*:*:*:*:*:*:*:* Versions 9.0 to before 9.4.3 Vulnerable ·Concrete CMS
Remediation
- Fix · CNA Concrete CMS (Concrete CMS) Fixed in 9.4.3
- Fix · GHSA-c5xf-rmv4-j85h concrete5/concrete5 (Packagist) Fixed in 9.4.3 Advisory →
Timeline
- 2026-10-02 Threatist record created from CVE-2025-8573
- 2026-10-03 Alias added: GHSA-c5xf-rmv4-j85h
References
Other 5
- https://www.concretecms.org/download
- https://documentation.concretecms.org/9-x/developers/introduction/version-history/943-release-notes
- https://github.com/concretecms/concretecms/commit/f7630b467d3a234d3d333ca117046a500e7ee2b6
- https://github.com/concretecms/concretecms
- https://github.com/concretecms/concretecms/releases/tag/9.4.3
More Concrete Cms vulnerabilities
- TI-2026-23602 ConcreteCMS v9.4.7 contains a Denial of Service (DoS) vulnerability in the File Manager… CVSS 3.1MEDIUM 6.5
- TI-2023-23992 A Cross Site Scripting (XSS) vulnerability in Concrete CMS from versions 9.2.0 to 9.2.2… CVSS 3.1MEDIUM 5.4
- TI-2023-26495 Concrete CMS before 8.5.13 and 9.x before 9.2.2 allows unauthorized access because… CVSS 3.1CRITICAL 9.8
- TI-2026-14907 Missing authorization in Concrete CMS CVSS 4.0HIGH 8.7
- TI-2022-06200 Cleartext transmission of sensitive information in https://github.com/concrete5/concrete5 CVSS 3.1CRITICAL 9.8
- TI-2021-17294 An issue was discovered in Concrete CMS through 8.5.5. CVSS 3.1CRITICAL 9.8
Sources
- CVE-2025-8573 · CVE Program
- CVE-2025-8573 · NVD
- FIRST EPSS
- GHSA-c5xf-rmv4-j85h · GitHub Advisory Database · CC BY 4.0
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