webpack-dev-server vulnerable to cross-site request forgery via internal developer endpoints
Impact
The internal /webpack-dev-server/open-editor and /webpack-dev-server/invalidate endpoints 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 them 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 (e.g. ~/.ssh/config). The file's contents are not returned to the attacker. Repeated requests can also spawn editor processes and force recompilations, degrading the developer's machine.
Patches
Fixed in webpack-dev-server 5.2.6 by rejecting cross-site requests to the /webpack-dev-server/open-editor and /webpack-dev-server/invalidate endpoints (see PR #5698).
Workarounds
None
Software afectado
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| Plataforma | Paquete | Versiones vulnerables | Corregida en |
|---|---|---|---|
| Paquete de npm | webpack-dev-server | < 5.2.6 | 5.2.6 |
Referencias
- https://github.com/webpack/webpack-dev-server/security/advisories/GHSA-f5vj-f2hx-8m93
- https://nvd.nist.gov/vuln/detail/CVE-2026-14620
- https://github.com/webpack/webpack-dev-server/pull/5698
- https://github.com/webpack/webpack-dev-server/commit/80cd9eea54975fe632a518d8bd902a260f374e7c
- https://cna.openjsf.org/security-advisories.html
- https://github.com/webpack/webpack-dev-server
- https://github.com/webpack/webpack-dev-server/releases/tag/v5.2.6
- Vector CVSS
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:N/I:N/A:L- Debilidad (CWE)
CWE-352, CWE-749- Plataforma
- npm
- Paquete
webpack-dev-server- Publicada
- 20.07.2026
- Actualizado
- 11.10.2026 10:22
Fuentes y licencias
OSV / GitHub Advisory Database - GHSA-f5vj-f2hx-8m93 - CC BY 4.0
Historial de vulnerabilidades: webpack-dev-server
Todas las vulnerabilidades publicadas de este paquete (Paquete de npm), de la más reciente a la más antigua. Muestra si es un fallo aislado o un paquete que hay que vigilar.
- Entradas en total
- 7
- Primera → última
- 01.2019 07.2026
- Sin corrección
- 0
- Explotada en ataques
- 0
Distribución por gravedad
- Alta 1
- Media 6
Divulgaciones por año
- 2019: 1
- 2020: 0
- 2021: 0
- 2022: 0
- 2023: 0
- 2024: 0
- 2025: 2
- 2026: 4
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webpack-dev-server vulnerable to cross-site request forgery via internal developer endpoints esta entrada
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