CVE-2025-52206Network attack vector

Browser data exposure via reflected monitor script

Published May 5, 2026 · Updated May 5, 2026

Reflected XSS in the ISPConfig 3.3.0 monitor allows remote authenticated users to execute script in a browser session. ISPConfig has not published the affected parameter or the precise operation that reflects untrusted data into the system status page. Exploitation requires a valid administrator login and user interaction; the published assessment limits the consequence to data exposure.

CVSS severity4.7
Medium
EPSS probability0.21%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Reflected XSS in the ISPConfig 3.3.0 monitor allows remote authenticated users to execute script in a browser session. ISPConfig has not published the affected parameter or the precise operation that reflects untrusted data into the system status page. Exploitation requires a valid administrator login and user interaction; the published assessment limits the consequence to data exposure.

The record

CVE
CVE-2025-52206
Published
May 5, 2026
Updated
May 5, 2026
Vendor
Unknown vendor
Product
Unknown product
Classifications
CWE-79
Attack vector
network
Privileges
Unavailable

Timeline

How it unfolded

  1. May 5, 2026CVE publishedPublication date reported by the CVE source.
  2. May 5, 2026Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

Affected buildAffected product and version details are unavailable.

What conditions does exploitation require?

Attack vectornetwork
Required privilegesUnavailable in this record.

What is affected?

Affected products and versions are unavailable in this record.

Published CVSS scores

4.7CISA-ADPCVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:N/A: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
PrivilegesUnavailable
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-79Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')

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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