What is the CVSS score of CVE-2025-63420?

CVE-2025-63420 has a CVSS 3.1 base score of 4.1 (Medium). CVSS vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:N/I:L/A:N. EPSS exploitation probability: 0.1%.

Which versions of Crushftp are affected by CVE-2025-63420?

Organizations using CrushFTP11 before 11.3.7_57 should be aware of moderate risk from CVE-2025-63420, a cross-site scripting vulnerability rated CVSS 4.1.

Is there a public PoC exploit available for CVE-2025-63420?

Yes, a public proof-of-concept exploit is available for CVE-2025-63420. Prioritise patching immediately. EPSS: 0.1%.

How to fix or mitigate CVE-2025-63420?

During next maintenance window: Identify affected systems and apply vendor patches when convenient. Verify Content-Security-Policy and output encoding.

Crushftp CVE-2025-63420

MEDIUM

Cross-site Scripting (XSS) (CWE-79)

2025-11-07 cve@mitre.org

XSS Crushftp

4.1

CVSS 3.1 · NVD

Severity by source

NVD PRIMARY

4.1 MEDIUM

AV:N/AC:L/PR:L/UI:R/S:C/C:N/I:L/A:N

Primary rating from NVD · only source for this CVE.

CVSS VectorNVD

Attack Vector

Network

Attack Complexity

Low

Privileges Required

Low

User Interaction

Required

Scope

Changed

Confidentiality

None

Integrity

Low

Availability

None

Lifecycle Timeline

Analysis Generated

Mar 28, 2026 - 19:21 vuln.today

PoC Detected

Feb 05, 2026 - 16:24 vuln.today

Public exploit code

CVE Published

Nov 07, 2025 - 22:15 nvd

MEDIUM 4.1

DescriptionCVE.org

CrushFTP11 before 11.3.7_57 is vulnerable to stored HTML injection in the CrushFTP Admin Panel (Reports / "Who Created Folder"), enabling persistent HTML execution in admin sessions.

AnalysisAI

CrushFTP11 before 11.3.7_57 is vulnerable to stored HTML injection in the CrushFTP Admin Panel (Reports / "Who Created Folder"), enabling persistent HTML execution in admin sessions. Rated medium severity (CVSS 4.1), this vulnerability is remotely exploitable, low attack complexity. Public exploit code available and no vendor patch available.

Technical ContextAI

This vulnerability is classified as Cross-Site Scripting (XSS) (CWE-79), which allows attackers to inject malicious scripts into web pages viewed by other users. CrushFTP11 before 11.3.7_57 is vulnerable to stored HTML injection in the CrushFTP Admin Panel (Reports / "Who Created Folder"), enabling persistent HTML execution in admin sessions. Affected products include: Crushftp. Version information: before 11.3.7.

RemediationAI

No vendor patch is available at time of analysis. Monitor vendor advisories for updates. Sanitize all user input, use Content-Security-Policy headers, encode output contextually (HTML, JS, URL). Use frameworks with built-in XSS protection.