Resources Downloaded over Insecure Protocol Affecting esbuild package, versions >=0.17.0 <0.28.1


Severity

Recommended
0.0
critical
0
10

CVSS assessment by Snyk's Security Team. Learn more

Do your applications use this vulnerable package?

In a few clicks we can analyze your entire application and see what components are vulnerable in your application, and suggest you quick fixes.

Test your applications
  • Snyk IDSNYK-JS-ESBUILD-17750822
  • published1 Jul 2026
  • disclosed12 Jun 2026
  • creditUnknown

Introduced: 12 Jun 2026

CVE NOT AVAILABLE CWE-426  (opens in a new tab)
CWE-494  (opens in a new tab)

How to fix?

Upgrade esbuild to version 0.28.1 or higher.

Overview

esbuild is an An extremely fast JavaScript and CSS bundler and minifier.

Affected versions of this package are vulnerable to Resources Downloaded over Insecure Protocol in the installFromNPM process. An attacker can execute arbitrary code with the privileges of the Deno process by supplying a malicious binary through control of the NPM_CONFIG_REGISTRY environment variable.

CVSS Base Scores

version 4.0
version 3.1