---
id: CVE-2026-14620
title: >-
  webpack-dev-server versions 5.2.5 and earlier expose two internal developer
  endpoints, /webpack-dev-server/open-editor and /webpack-dev-server/invalidate,
  that perform state-changing actions on any GET request without verifying that
  the …
summary: >-
  webpack-dev-server versions 5.2.5 and earlier expose two internal developer
  endpoints, /webpack-dev-server/open-editor and /webpack-dev-server/invalidate,
  that perform state-changing actions on any GET request without verifying that
  the …
severity: medium
cvss: 4.7
cvssVector: 'CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:N/I:N/A:L'
cwe:
  - CWE-352
  - CWE-749
published: '2026-07-03'
updated: '2026-07-03'
source: NVD
sourceUrl: 'https://nvd.nist.gov/vuln/detail/CVE-2026-14620'
references:
  - url: 'https://cna.openjsf.org/security-advisories.html'
    label: ce714d77-add3-4f53-aff5-83d477b104bb
  - url: >-
      https://github.com/webpack/webpack-dev-server/security/advisories/GHSA-f5vj-f2hx-8m93
    label: ce714d77-add3-4f53-aff5-83d477b104bb
tags:
  - nvd
  - exploit-available
ingestedAt: '2026-07-04T10:56:04.367Z'
epss: 0.00521
epssPercentile: 0.41712
exploitAvailable: true
exploits:
  exploitdb: true
  checkedAt: '2026-09-25T08:20:50.332Z'
---

## Overview

webpack-dev-server versions 5.2.5 and earlier expose two internal developer endpoints, /webpack-dev-server/open-editor and /webpack-dev-server/invalidate, that perform state-changing actions on any GET request without verifying that the request originated from the dev server's own page. Any website a developer visits while the dev server is running can trigger these endpoints cross-origin with no interaction beyond the visit. An attacker can open an arbitrary existing local file in the developer's editor, including files outside the project root, and repeated requests can spawn editor processes and force recompilations that degrade the developer's machine. Patches: upgrade to webpack-dev-server 5.2.6. Workarounds: none.

## Remediation

Refer to the linked advisories for vendor-supplied fixes and affected version ranges.