Is CVE-2021-21420 actively exploited?

No active exploitation of CVE-2021-21420 has been confirmed so far. Continue monitoring, as exploit status can change.

Can CVE-2021-21420 be exploited remotely?

No. CVE-2021-21420 requires local access to exploit.

What is the CVSS score of CVE-2021-21420?

CVE-2021-21420 has a CVSS score of 7.8 (HIGH).

HOME VULNERABILITIESCVE-2021-21420

HIGH

CVE-2021-21420

CWE-74Published: April 1, 2021· Updated: Jun 17, 2026

7.8

CVSS v3.1

Official Description

vscode-stripe is an extension for Visual Studio Code. A vulnerability in Stripe for Visual Studio Code extension exists when it loads an untrusted source-code repository containing malicious settings. An attacker who successfully exploited the vulnerability could run arbitrary code in the context of the current user. The update addresses the vulnerability by modifying the way the extension validates its settings.

NVD Source

Technical Analysis

CVE-2021-21420 requires local access, meaning attackers must already have a foothold on the target system.

Exploitation does not require any privileges, though user interaction (Required) is needed, which slightly reduces the risk of mass automated attacks.

A successful exploit results in complete confidentiality breach (data exposure), full integrity compromise (data manipulation), availability disruption (denial of service), with a CVSS base score of 7.8.