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9.1
CRITICAL CVSS 3.1
CVE-2025-65717
Visual Studio Code Extensions Live Server File Exfiltration Vulnerability
Description

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.

INFO

Published Date :

Feb. 16, 2026, 4:19 p.m.

Last Modified :

Feb. 25, 2026, 6:43 p.m.

Remotely Exploit :

Yes !

Source :

[email protected]
Affected Products

The following products are affected by CVE-2025-65717 vulnerability. Even if cvefeed.io is aware of the exact versions of the products that are affected, the information is not represented in the table below.

ID Vendor Product Action
1 Ritwickdey live_server
: Total Affected Vendor : 1 | Products : 1
CVSS Scores
The Common Vulnerability Scoring System is a standardized framework for assessing the severity of vulnerabilities in software and systems. We collect and displays CVSS scores from various sources for each CVE.
Score Version Severity Vector Exploitability Score Impact Score Source
CVSS 3.1 CRITICAL 134c704f-9b21-4f2e-91b3-4a467353bcc0
CVSS 3.1 MEDIUM 134c704f-9b21-4f2e-91b3-4a467353bcc0
Solution
Update Visual Studio Code Extensions Live Server to the latest version to fix file exfiltration.
  • Update Visual Studio Code Extensions Live Server.
  • Avoid user interaction with untrusted HTML pages.
Public PoC/Exploit Available at Github

CVE-2025-65717 has a 1 public PoC/Exploit available at Github. Go to the Public Exploits tab to see the list.

References to Advisories, Solutions, and Tools

Here, you will find a curated list of external links that provide in-depth information, practical solutions, and valuable tools related to CVE-2025-65717.

URL Resource
https://github.com/ritwickdey/vscode-live-server Product
https://www.ox.security/blog/cve-2025-65717-live-server-vscode-vulnerability/ ExploitThird Party Advisory
CWE - Common Weakness Enumeration

While CVE identifies specific instances of vulnerabilities, CWE categorizes the common flaws or weaknesses that can lead to vulnerabilities. CVE-2025-65717 is associated with the following CWEs:

Common Attack Pattern Enumeration and Classification (CAPEC)

Common Attack Pattern Enumeration and Classification (CAPEC) stores attack patterns, which are descriptions of the common attributes and approaches employed by adversaries to exploit the CVE-2025-65717 weaknesses.

CAPEC-63: Cross-Site Scripting (XSS) Cross-Site Scripting (XSS) CAPEC-85: AJAX Footprinting AJAX Footprinting CAPEC-209: XSS Using MIME Type Mismatch XSS Using MIME Type Mismatch CAPEC-588: DOM-Based XSS DOM-Based XSS CAPEC-591: Reflected XSS Reflected XSS CAPEC-592: Stored XSS Stored XSS CAPEC-13: Subverting Environment Variable Values Subverting Environment Variable Values CAPEC-22: Exploiting Trust in Client Exploiting Trust in Client CAPEC-59: Session Credential Falsification through Prediction Session Credential Falsification through Prediction CAPEC-60: Reusing Session IDs (aka Session Replay) Reusing Session IDs (aka Session Replay) CAPEC-79: Using Slashes in Alternate Encoding Using Slashes in Alternate Encoding CAPEC-116: Excavation Excavation CAPEC-169: Footprinting Footprinting CAPEC-224: Fingerprinting Fingerprinting CAPEC-285: ICMP Echo Request Ping ICMP Echo Request Ping CAPEC-287: TCP SYN Scan TCP SYN Scan CAPEC-290: Enumerate Mail Exchange (MX) Records Enumerate Mail Exchange (MX) Records CAPEC-291: DNS Zone Transfers DNS Zone Transfers CAPEC-292: Host Discovery Host Discovery CAPEC-293: Traceroute Route Enumeration Traceroute Route Enumeration CAPEC-294: ICMP Address Mask Request ICMP Address Mask Request CAPEC-295: Timestamp Request Timestamp Request CAPEC-296: ICMP Information Request ICMP Information Request CAPEC-297: TCP ACK Ping TCP ACK Ping CAPEC-298: UDP Ping UDP Ping CAPEC-299: TCP SYN Ping TCP SYN Ping CAPEC-300: Port Scanning Port Scanning CAPEC-301: TCP Connect Scan TCP Connect Scan CAPEC-302: TCP FIN Scan TCP FIN Scan CAPEC-303: TCP Xmas Scan TCP Xmas Scan CAPEC-304: TCP Null Scan TCP Null Scan CAPEC-305: TCP ACK Scan TCP ACK Scan CAPEC-306: TCP Window Scan TCP Window Scan CAPEC-307: TCP RPC Scan TCP RPC Scan CAPEC-308: UDP Scan UDP Scan CAPEC-309: Network Topology Mapping Network Topology Mapping CAPEC-310: Scanning for Vulnerable Software Scanning for Vulnerable Software CAPEC-312: Active OS Fingerprinting Active OS Fingerprinting CAPEC-313: Passive OS Fingerprinting Passive OS Fingerprinting CAPEC-317: IP ID Sequencing Probe IP ID Sequencing Probe CAPEC-318: IP 'ID' Echoed Byte-Order Probe IP 'ID' Echoed Byte-Order Probe CAPEC-319: IP (DF) 'Don't Fragment Bit' Echoing Probe IP (DF) 'Don't Fragment Bit' Echoing Probe CAPEC-320: TCP Timestamp Probe TCP Timestamp Probe CAPEC-321: TCP Sequence Number Probe TCP Sequence Number Probe CAPEC-322: TCP (ISN) Greatest Common Divisor Probe TCP (ISN) Greatest Common Divisor Probe CAPEC-323: TCP (ISN) Counter Rate Probe TCP (ISN) Counter Rate Probe CAPEC-324: TCP (ISN) Sequence Predictability Probe TCP (ISN) Sequence Predictability Probe CAPEC-325: TCP Congestion Control Flag (ECN) Probe TCP Congestion Control Flag (ECN) Probe CAPEC-326: TCP Initial Window Size Probe TCP Initial Window Size Probe CAPEC-327: TCP Options Probe TCP Options Probe CAPEC-328: TCP 'RST' Flag Checksum Probe TCP 'RST' Flag Checksum Probe CAPEC-329: ICMP Error Message Quoting Probe ICMP Error Message Quoting Probe CAPEC-330: ICMP Error Message Echoing Integrity Probe ICMP Error Message Echoing Integrity Probe CAPEC-472: Browser Fingerprinting Browser Fingerprinting CAPEC-497: File Discovery File Discovery CAPEC-508: Shoulder Surfing Shoulder Surfing CAPEC-573: Process Footprinting Process Footprinting CAPEC-574: Services Footprinting Services Footprinting CAPEC-575: Account Footprinting Account Footprinting CAPEC-576: Group Permission Footprinting Group Permission Footprinting CAPEC-577: Owner Footprinting Owner Footprinting CAPEC-616: Establish Rogue Location Establish Rogue Location CAPEC-643: Identify Shared Files/Directories on System Identify Shared Files/Directories on System CAPEC-646: Peripheral Footprinting Peripheral Footprinting CAPEC-651: Eavesdropping Eavesdropping CAPEC-178: Cross-Site Flashing Cross-Site Flashing

We scan GitHub repositories to detect new proof-of-concept exploits. Following list is a collection of public exploits and proof-of-concepts, which have been published on GitHub (sorted by the most recently updated).

Profile Photo
natsuki-engr/live-server-evil-crawler

Live Server VSCode Vulnerability (CVE-2025-65717) Demo

HTML JavaScript

Updated: 2 weeks, 4 days ago
0 stars 0 fork 0 watcher
Born at : Feb. 19, 2026, 12:54 p.m. This repo has been linked 1 different CVEs too.

Results are limited to the first 15 repositories due to potential performance issues.

The following list is the news that have been mention CVE-2025-65717 vulnerability anywhere in the article.

  • CybersecurityNews
Critical Vulnerabilities in VS Code Extensions Threaten 128 Million Developer Environments

128 Million Users at Risk VS Code Extensions Flaws Three critical vulnerabilities have been found in four popular Visual Studio Code extensions. These extensions have been downloaded over 128 million ... Read more

Published Date: Feb 20, 2026 (2 weeks, 3 days ago)
  • Daily CyberSecurity
The Dev Environment Trap: 128 Million Users at Risk as Top VS Code Extensions Unmask Critical Flaws

Ubiquitous extensions for Visual Studio Code, boasting a cumulative download count exceeding 128 million, have been unmasked as susceptible to exploits involving local file exfiltration and remote cod ... Read more

Published Date: Feb 20, 2026 (2 weeks, 3 days ago)
  • Daily CyberSecurity
CVE-2025-65717: Critical Vulnerability in VS Code’s Live Server Extension Puts 72 Million Developers at Risk, No Patch

Attack Flow | Image: OX Security A wildly popular tool designed to make web development easier is currently harboring a massive security blind spot. Researchers at OX Security have unearthed a severe ... Read more

Published Date: Feb 20, 2026 (2 weeks, 3 days ago)
  • The Cyber Express
Critical Security Flaws Discovered in Four VS Code Extensions Affecting Millions

Researchers have uncovered vulnerabilities in four widely used VS Code extensions, collectively installed more than 125 million times, raising renewed concerns about the security of the modern softwar ... Read more

Published Date: Feb 19, 2026 (2 weeks, 4 days ago)
  • The Hacker News
Critical Flaws Found in Four VS Code Extensions with Over 125 Million Installs

Cybersecurity researchers have disclosed multiple security vulnerabilities in four popular Microsoft Visual Studio Code (VS Code) extensions that, if successfully exploited, could allow threat actors ... Read more

Published Date: Feb 18, 2026 (2 weeks, 5 days ago)

Results are limited to the first 20 news articles due to potential performance issues.

The following table lists the changes that have been made to the CVE-2025-65717 vulnerability over time.

Vulnerability history details can be useful for understanding the evolution of a vulnerability, and for identifying the most recent changes that may impact the vulnerability's severity, exploitability, or other characteristics.

  • Initial Analysis by [email protected]

    Feb. 25, 2026

    Action Type Old Value New Value
    Added CPE Configuration OR *cpe:2.3:a:ritwickdey:live_server:*:*:*:*:*:visual_studio_code:*:* versions from (including) 5.7.9
    Added Reference Type MITRE: https://github.com/ritwickdey/vscode-live-server Types: Product
    Added Reference Type MITRE: https://www.ox.security/blog/cve-2025-65717-live-server-vscode-vulnerability/ Types: Exploit, Third Party Advisory
  • CVE Modified by 134c704f-9b21-4f2e-91b3-4a467353bcc0

    Feb. 18, 2026

    Action Type Old Value New Value
    Added CVSS V3.1 AV:N/AC:L/PR:N/UI:R/S:U/C:L/I:N/A:N
    Removed CVSS V3.1 AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N
  • CVE Modified by 134c704f-9b21-4f2e-91b3-4a467353bcc0

    Feb. 17, 2026

    Action Type Old Value New Value
    Added CVSS V3.1 AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N
    Added CWE CWE-79
    Added CWE CWE-200
    Added CWE CWE-601
  • New CVE Received by [email protected]

    Feb. 16, 2026

    Action Type Old Value New Value
    Added Description 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.
    Added Reference https://github.com/ritwickdey/vscode-live-server
    Added Reference https://www.ox.security/blog/cve-2025-65717-live-server-vscode-vulnerability/
EPSS is a daily estimate of the probability of exploitation activity being observed over the next 30 days. Following chart shows the EPSS score history of the vulnerability.
Vulnerability Scoring Details
Base CVSS Score: 9.1
Attack Vector
Attack Complexity
Privileges Required
User Interaction
Scope
Confidentiality Impact
Integrity Impact
Availability Impact