What is the CVSS score of CVE-2025-65717?

CVE-2025-65717 has a CVSS 3.1 base score of 4.3 (Medium). CVSS vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:L/I:N/A:N. EPSS exploitation probability: 0.0%.

Which versions of Live Server are affected by CVE-2025-65717?

Organizations using Visual Studio Code Extensions Live Server should be aware of moderate risk from CVE-2025-65717, a cross-site scripting vulnerability rated CVSS 4.3.

Is there a public PoC exploit available for CVE-2025-65717?

Yes, a public proof-of-concept exploit is available for CVE-2025-65717. Prioritise patching immediately. EPSS: 0.0%.

How to fix or mitigate CVE-2025-65717?

Within 30 days: Identify affected systems running Visual Studio Code Extensions Live Server and apply vendor patches as part of regular patch cycle. Verify Content-Security-Policy and output encoding.

Live Server CVE-2025-65717

MEDIUM

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

2026-02-16 cve@mitre.org

XSS Live Server

4.3

CVSS 3.1 · NVD

Severity by source

NVD PRIMARY

4.3 MEDIUM

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

Primary rating from NVD · only source for this CVE.

CVSS VectorNVD

CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:L/I:N/A:N

Attack Vector

Network

Attack Complexity

Low

Privileges Required

None

User Interaction

Required

Scope

Unchanged

Confidentiality

Low

Integrity

None

Availability

None

Lifecycle Timeline

Analysis Generated

Mar 12, 2026 - 21:54 vuln.today

PoC Detected

Feb 25, 2026 - 18:43 vuln.today

Public exploit code

CVE Published

Feb 16, 2026 - 16:19 nvd

MEDIUM 4.3

DescriptionCVE.org

An issue in Visual Studio Code Extensions Live Server v5.7.9 allows attackers to exfiltrate files via user interaction with a crafted HTML page.

AnalysisAI

An issue in Visual Studio Code Extensions Live Server v5.7.9 allows attackers to exfiltrate files via user interaction with a crafted HTML page. [CVSS 4.3 MEDIUM]

Technical ContextAI

Classified as CWE-79 (Cross-site Scripting (XSS)). Affects Live Server. An issue in Visual Studio Code Extensions Live Server v5.7.9 allows attackers to exfiltrate files via user interaction with a crafted HTML page.

RemediationAI

Monitor vendor advisories for a patch. Implement output encoding and Content Security Policy headers. Restrict network access to the affected service where possible.

CVE-2025-65717 vulnerability details – vuln.today

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Live Server CVE-2025-65717

Severity by source

CVSS VectorNVD

Lifecycle Timeline

DescriptionCVE.org

AnalysisAI

Technical ContextAI

RemediationAI

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External POC / Exploit Code