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ISPConfig CVE-2025-52206

| EUVDEUVD-2025-209641 MEDIUM
Cross-site Scripting (XSS) (CWE-79)
2026-05-05 mitre
4.7
CVSS 3.1 · Vendor: mitre
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Severity by source

Vendor (mitre) PRIMARY
4.7 MEDIUM
AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:N/A:N

Primary rating from Vendor (mitre) · only source for this CVE.

CVSS VectorVendor: mitre

Attack Vector
Network
Attack Complexity
Low
Privileges Required
None
User Interaction
Required
Scope
Changed
Confidentiality
Low
Integrity
None
Availability
None

Lifecycle Timeline

2
Analysis Generated
May 05, 2026 - 22:30 vuln.today
CVSS changed
May 05, 2026 - 20:22 NVD
4.7 (MEDIUM)

DescriptionCVE.org

ISPConfig 3.3.0 is vulnerable to Cross Site Scripting (XSS) via the system status webpage.

AnalysisAI

ISPConfig 3.3.0 allows reflected cross-site scripting (XSS) attacks via the system status webpage, enabling unauthenticated remote attackers to inject malicious scripts that execute in a victim's browser when they visit a crafted link. The vulnerability requires user interaction (clicking a malicious link) but can result in session hijacking, credential theft, or other client-side attacks. A patched version (3.3.0p2) has been released.

Technical ContextAI

This is a reflected XSS vulnerability (CWE-79) in ISPConfig's system status webpage. The vulnerability arises from insufficient input validation and output encoding of user-supplied parameters displayed on the status page. ISPConfig is a web-based server control panel used for managing hosting environments, DNS, email, and other services. The affected endpoint likely renders status information without properly sanitizing or escaping HTML/JavaScript, allowing attackers to break out of the intended context and inject arbitrary client-side code.

RemediationAI

Upgrade to ISPConfig 3.3.0p2 or later immediately, as the vendor has released a patched version explicitly addressing this XSS vulnerability. Follow the upgrade procedure documented at https://www.ispconfig.org/blog/ispconfig-3-3-0p2-released-security-update/. If immediate patching is not possible, apply compensating controls: restrict network access to the ISPConfig web interface to trusted administrator IP addresses or VPN, disable the system status webpage if not operationally required, or implement a Web Application Firewall (WAF) rule to block requests containing XSS payloads to the status endpoint. Note that these compensating controls do not eliminate the vulnerability and should be temporary measures only.

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CVE-2025-52206 vulnerability details – vuln.today

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