CVE-2025-59117Network attack vector

Stored script execution via page-editing inputs

Published Nov 18, 2025 · Updated Dec 5, 2025

Stored XSS in Windu CMS 4.1 allows remote authenticated users to execute script in higher-privileged users' browsers via page editing. CERT Polska identifies the page-editing endpoint but does not disclose the affected fields or the precise encoding or sanitization failure that stores executable markup. Exploitation requires a privileged account and a higher-privileged user to view the affected content, limiting the consequence to script execution in that user's browser.

CVSS severity4.8
Medium
EPSS probability0.19%
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 Windu CMS 4.1 allows remote authenticated users to execute script in higher-privileged users' browsers via page editing. CERT Polska identifies the page-editing endpoint but does not disclose the affected fields or the precise encoding or sanitization failure that stores executable markup. Exploitation requires a privileged account and a higher-privileged user to view the affected content, limiting the consequence to script execution in that user's browser.

The record

CVE
CVE-2025-59117
Published
Nov 18, 2025
Updated
Dec 5, 2025
Vendor
JCD.PL
Product
Windu CMS
Classifications
CWE-79, CAPEC-592, T1059.007
Attack vector
network
Privileges
admin

Timeline

How it unfolded

  1. Nov 18, 2025CVE publishedPublication date reported by the CVE source.
  2. Dec 5, 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=0 <=4.1 changes=[{"at":"build 2250","status":"unaffected"}]

What conditions does exploitation require?

Attack vectornetwork
Required privilegesadmin

What is affected?

JCD.PL · Windu CMSversion=0 <=4.1 changes=[{"at":"build 2250","status":"unaffected"}]

Published CVSS scores

4.8NIST NVDCVSS:3.1/AV:N/AC:L/PR:H/UI:R/S:C/C:L/I:L/A:N
4.8CERT.PLCVSS:4.0/AV:N/AC:L/AT:N/PR:H/UI:P/VC:N/VI:N/VA:N/SC:L/SI:L/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 10, 2026Sep 16, 2026
Latest reporting daySep 16, 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')
CAPEC-592Stored XSS
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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