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CVE-2025-8573

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Date: August 5, 2025

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 for reporting via HackerOne.

Severity Score

Related Resources (7)

https://github.com/concretecms/concretecms/commit/f7630b467d3a234d3d333ca117046a500e7ee2b6
https://documentation.concretecms.org/9-x/developers/introduction/version-history/943-release-notes
https://github.com/concretecms/concretecms
https://github.com/concretecms/concretecms/releases/tag/9.4.3
https://nvd.nist.gov/vuln/detail/CVE-2025-8573
https://www.concretecms.org/download
https://www.mend.io/vulnerability-database/CVE-2025-8573

Severity Score

Weakness Type (CWE)

Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')

CWE-79

Improper Input Validation

CWE-20

Top Fix

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Upgrade to version concrete5/concrete5 - 9.4.3

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CVSS v3.1

Base Score:
Attack Vector (AV): NETWORK
Attack Complexity (AC): LOW
Privileges Required (PR): HIGH
User Interaction (UI): REQUIRED
Scope (S): CHANGED
Confidentiality (C): LOW
Integrity (I): LOW
Availability (A): NONE

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