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.

No CVSS v4.0

Attack Vector Network

Attack Complexity Low

Privileges Required None

Scope Changed

Confidentiality Impact None

Integrity Impact None

Availability Impact Low

User Interaction Required

No CVSS v3.0

No CVSS v2

This CVE is not in the KEV list.

The EPSS score is 0.00149.

Exploitation none

Automatable no

Technical Impact partial

Default status is the baseline for the product, each version can override it (e.g. patched versions marked unaffected).

Vendor Product Default status Versions
webpack-dev-server webpack-dev-server unaffected
Version Status Constraints
0 affected < 5.2.6
5.2.6 unaffected —

No data.

No data.

OpenCVE Enrichment is a feature of OpenCVE that uses AI to automatically link vendors and products to CVEs. Learn more on GitHub.

No data.

Project Subscriptions

No data.

Advisories
Source ID Title
Github GHSA Github GHSA GHSA-f5vj-f2hx-8m93 webpack-dev-server vulnerable to cross-site request forgery via internal developer endpoints
Fixes

Solution

No solution given by the vendor.

Workaround

No workaround given by the vendor.

References
Link Providers
https://cna.openjsf.org/security-advisories.html cve-icon cve-icon
https://github.com/webpack/webpack-dev-server/security/advisories/GHSA-f5vj-f2hx-8m93 cve-icon cve-icon
https://nvd.nist.gov/vuln/detail/CVE-2026-14620 cve-icon
https://www.cve.org/CVERecord?id=CVE-2026-14620 cve-icon
History

Mon, 06 Jul 2026 16:30:00 +0000

Type Values Removed Values Added
Metrics ssvc

{'options': {'Automatable': 'no', 'Exploitation': 'none', 'Technical Impact': 'partial'}, 'version': '2.0.3'}

Mon, 06 Jul 2026 12:15:00 +0000

Type Values Removed Values Added
Weaknesses CWE-940
References
Metrics threat_severity

None

 threat_severity

Moderate

Fri, 03 Jul 2026 17:15:00 +0000

Type Values Removed Values Added
Description 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.
Title webpack-dev-server vulnerable to cross-site request forgery via internal developer endpoints
Weaknesses CWE-352
CWE-749
References
Metrics cvssV3_1

{'score': 4.7, 'vector': 'CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:N/I:N/A:L'}

Projects

Sign in to view the affected projects.

cve-icon MITRE

Status: PUBLISHED

Assigner: openjs

Published:

Updated: 2026-07-06T15:54:51.519Z

Reserved: 2026-07-03T16:50:55.559Z

Link: CVE-2026-14620

cve-icon Vulnrichment

Updated: 2026-07-06T15:54:46.287Z

cve-icon NVD

No data.

cve-icon Redhat

Severity : Moderate

Publid Date: 2026-07-03T17:00:00Z

Links: CVE-2026-14620 - Bugzilla

cve-icon OpenCVE Enrichment

Updated: 2026-07-26T22:45:05Z

Weaknesses