Is esbuild 0.27 vulnerable?

npm · 7 releases from 0.27.0 to 0.27.7 · latest esbuild is 0.28.2 · checked 2 Nov 2026

Yes: 1 known advisory

Yes. esbuild 0.27.7, the last 0.27 release, is affected by 1 known security advisory (1 low). Upgrade to 0.28.1 or later to fix all of them.

Upgrade with:npm install esbuild@0.28.1

Is your project affected?

Private repo? Upload its lockfile instead, or connect GitHub to check every repo.

Advisories affecting esbuild 0.27.7

  • LowGHSA-g7r4-m6w7-qqqr12 Jun 2026

    esbuild allows arbitrary file read when running the development server on Windows

    Affected
    >=0.27.3 <0.28.1
    Fixed in
    0.28.1

Which of your client projects are still on esbuild 0.27?

NPMscan reads the lockfiles in every GitHub repo you pick, finds the exact esbuild version each one installs, and checks it against these advisories. Each finding comes with the command that fixes it.

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Other esbuild versions

Advisory data from OSV.dev (opens OSV.dev in a new tab), which includes the GitHub Advisory Database. Release list from the npm registry. Refreshed daily.