CVE-2026-14620

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.

CVSS v3 4.7 MEDIUM

4.7^/10

CVSS v3 : MEDIUM

Vector :

Exploitability : 2.8 / Impact : 1.4

Attack Vector NETWORK

Attack Complexity LOW

Privileges Required NONE

User Interaction REQUIRED

Confidentiality Impact NONE

Integrity Impact NONE

Availability Impact LOW

Scope CHANGED

References

Link	Resource
https://cna.openjsf.org/security-advisories.html	Third Party Advisory
https://github.com/webpack/webpack-dev-server/security/advisories/GHSA-f5vj-f2hx-8m93	Patch Vendor Advisory

Configurations

Configuration 1 (hide)

cpe:2.3:a:webpack.js:webpack-dev-server:*:*:*:*:*:*:*:*

History

07 Jul 2026, 15:12

Type	Values Removed	Values Added
First Time		Webpack.js webpack-dev-server Webpack.js
CPE		cpe:2.3:a:webpack.js:webpack-dev-server::::::::
References	~~() https://cna.openjsf.org/security-advisories.html -~~	() https://cna.openjsf.org/security-advisories.html - Third Party Advisory
References	~~() https://github.com/webpack/webpack-dev-server/security/advisories/GHSA-f5vj-f2hx-8m93 -~~	() https://github.com/webpack/webpack-dev-server/security/advisories/GHSA-f5vj-f2hx-8m93 - Patch, Vendor Advisory

03 Jul 2026, 17:16

Type	Values Removed	Values Added
New CVE

Information

Published : 2026-07-03 17:16

Updated : 2026-07-07 15:12

NVD link : CVE-2026-14620

Mitre link : CVE-2026-14620

CVE.ORG link : CVE-2026-14620

JSON object : View

Products Affected

webpack.js

webpack-dev-server

CWE

CWE-352

Cross-Site Request Forgery (CSRF)

CWE-749

Exposed Dangerous Method or Function

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