Happy DOM: Incomplete fix for CVE-2026-33943: unsanitized import alias leads to host code execution

Date Oct 23, 2026

Type Vendor advisory

Signal High-risk advisory

Vendor / Product npm · happy-dom

CVE CVE-2026-115895

High-risk advisory CVE-2026-115895

Summary

Happy DOM: Incomplete fix for CVE-2026-33943: unsanitized import alias leads to host code execution

Why it matters

GitHub has published a reviewed security advisory for happy-dom. Prioritize it with other application dependency updates.

Operator check

Check whether happy-dom is present in application dependency manifests, lockfiles, or build images. Review the GitHub advisory and upgrade to a patched version where available.

Sources

GitHub Advisory GHSA-834v-8h66-3h79 NVD — CVE-2026-115895 Source reference

PatchBrief uses public sources. It does not scan environments, verify exposure, or replace vendor guidance.

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