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

published 2026-02-16 8 mo ago modified 2026-06-17 4 mo ago also EUVD-2025-207801

cvss: 4.3; version 3.1, CNA
cisa kev: Not listed; not in CISA's catalog
epss: 0.6%; EPSS 0.6% chance of exploitation in 30 days, percentile 50%
public exploits: 0; none known

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.

CISA SSVC

Exploitation: Proof of concept is public
Automatable: no
Technical impact: partial
Assessed: 8 mo ago (2026-02-18)

Exploit prediction

0.63% chance of exploitation in the next 30 days, higher than 50% of all scored CVEs (FIRST EPSS, 2026-11-08).

Exploits and checks

ox.security https://www.ox.security/blog/cve-2025-65717-live-server-vscode-vulnerability/ referenced PoC, tagged "exploit" by a source, unverified

CVSS scores

assigned by	version	score	vector
CISA ADP	3.1	4.3	CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:L/I:N/A:N
CNA	3.1	4.3	CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:L/I:N/A:N

Classification

Weakness

CWE-601 URL Redirection to Untrusted Site
CWE-200 Exposure of Sensitive Information to an Unauthorized Actor
CWE-79 Improper Neutralization of Input During Web Page Generation

References

ox.security /blog/cve-2025-65717-live-server-vscode-vulnerability/
exploit, third-party-advisory
github.com /ritwickdey/vscode-live-server
product
github.com /ritwickdey/vscode-live-server/security/advisories/GHSA-9qrh-552f-x896

Sources

CVE List CVE-2025-65717
NVD CVE-2025-65717

Fencer Vulns keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.

Summary