CVE-2025-8573Network attack vector

Stored XSS via unescaped home-folder names

Published Aug 5, 2025 · Updated Aug 11, 2025

Stored XSS in the Members Dashboard of Concrete CMS 9.0.0 through 9.4.2 allows remote authenticated users to execute JavaScript. The home-folder list and user-search column return TreeNodes.treeNodeName without HTML escaping, allowing a crafted folder name to become page markup. Administrator privileges are required to create the malicious folder, and code runs only when another user reaches the affected page after login.

CVSS severity2.0
Low
EPSS probability0.44%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Stored XSS in the Members Dashboard of Concrete CMS 9.0.0 through 9.4.2 allows remote authenticated users to execute JavaScript. The home-folder list and user-search column return TreeNodes.treeNodeName without HTML escaping, allowing a crafted folder name to become page markup. Administrator privileges are required to create the malicious folder, and code runs only when another user reaches the affected page after login.

The record

CVE
CVE-2025-8573
Published
Aug 5, 2025
Updated
Aug 11, 2025
Vendor
Concrete CMS
Product
Concrete CMS
Classifications
CWE-79, CWE-20, T1059.007
Attack vector
network
Privileges
admin

Timeline

How it unfolded

  1. Aug 5, 2025CVE publishedPublication date reported by the CVE source.
  2. Aug 11, 2025Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=9.0.0 <9.4.3

What conditions does exploitation require?

Attack vectornetwork
Required privilegesadmin

What is affected?

Concrete CMS · Concrete CMSversion=9.0.0 <9.4.3

Published CVSS scores

2.0ConcreteCMSCVSS:4.0/AV:N/AC:H/AT:N/PR:H/UI:P/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

Daily unique IPsNo honeypot observations are available for this CVE in the selected window.

No observations available

Sep 9, 2026Sep 15, 2026
Latest reporting daySep 15, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesadmin
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-79Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')
CWE-20Improper Input Validation
T1059.007JavaScript/JScript

Public exploit references

No public exploit references are available in this record.

Labels summarize the accepted research assessment. They do not indicate a test against your environment.

Technologies

Your stack

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Your stack

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