🚨 [security] Update webpack-dev-server 5.2.4 → 5.2.5 (patch)

[depfu]

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🚨 Your current dependencies have known security vulnerabilities 🚨

This dependency update fixes known security vulnerabilities. Please see the details below and assess their impact carefully. We recommend to merge and deploy this as soon as possible!

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Here is everything you need to know about this update. Please take a good look at what changed and the test results before merging this pull request.

What changed?

✳️ webpack-dev-server (5.2.4 → 5.2.5) · Repo · Changelog

Security Advisories 🚨

🚨 webpack-dev-server vulnerable to HMR WebSocket interception via permissive user proxies

Impact

When a user-configured proxy on webpack-dev-server has a broad context (e.g. /) and ws: true, it also intercepts the dev server's own HMR WebSocket and forwards it to the proxy target. This leaks the browser's cookies and Origin header to the backend, bypasses the dev server's Host/Origin validation, and corrupts the HMR socket (both HMR and the proxy end up writing to the same socket).

Patches

Fixed in webpack-dev-server 5.2.5.

Workarounds

Scope user-defined proxy context to specific paths instead of /, or omit ws: true from the proxy entry when WebSocket forwarding is not required.

Release Notes

5.2.5

Patch Changes

• Skip the HMR WebSocket path when forwarding upgrade requests to user-defined proxies, so custom proxy WebSocket upgrades are no longer intercepted by the dev server. (by @bjohansebas in #5680)

Does any of this look wrong? Please let us know.

Commits

See the full diff on Github. The new version differs by 4 commits:

• chore(release): new release (#5682)
• feat: add changeset validation and release workflow (#5680)
• fix(proxy): match the HMR upgrade path exactly like the ws server (#5678)
• fix: skip HMR websocket path when forwarding upgrades to user-defined proxies (#4316)

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