PT-2026-80206 · Npm · Next-Video

Published

2026-08-20

·

Updated

2026-08-20

CVSS v4.0

6.9

Medium

VectorAV:N/AC:L/AT:N/PR:N/UI:N/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N

Impact

The HTTP route handler exported by next-video/request-handler — which the README instructs consumers to mount at /api/video — allows an unauthenticated remote attacker to read arbitrary .json files from the production filesystem of any application following the documented setup.
The handler's GET endpoint accepts a url query parameter and uses it to locate and serve a JSON asset descriptor from disk. The only guard between "remote URL" and "local file path" is a regex check for ^https?://. Any value that does not match that prefix is treated as a local path, .json is appended, and the file is read with fs.readFile and returned in the HTTP response — with no authentication, no path canonicalization, and no traversal guard.
On a typical Next.js deployment this exposes, at minimum:
  • The Next.js Server Actions AES encryption key (.next/server/server-reference-manifest.json)
  • The Next.js Preview/Draft Mode keys (previewModeId, previewModeSigningKey, previewModeEncryptionKey)
  • Internal build manifests, route registries, and absolute runtime paths
  • Application-specific asset metadata (e.g. Mux uploadId, assetId, playbackId values stored in videos/*.json)
Any application that mounted /api/video following the documented one-liner is affected.

Patches

2.8.1

Workarounds

Until a patched version is available, wrap the exported handler in your own route file and validate the url parameter before passing it through:
  • Reject any url value that does not begin with https://, or that does not match a known allowlist of trusted remote hosts.
  • Alternatively, remove the /api/video route entirely if your application only uses build-time import of local video files and does not use <Video src="https://..."> with string URLs at runtime.

References

  • src/request-handler.ts — the vulnerable GET handler
  • src/assets.ts — getAssetPath(), where the local-vs-remote branching occurs
  • src/utils/utils.ts — isRemote(), the sole guard between the two branches
  • src/config.ts — loadAsset(), which performs the unconstrained fs.readFile

Fix

Information Disclosure

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Weakness Enumeration

CWE-200

Related Identifiers

GHSA-2P39-2JF3-FV2Q

Affected Products

Next-Video