Summary
next-video: Unauthenticated arbitrary file read via /api/video request handler
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
urlvalue that does not begin withhttps://, or that does not match a known allowlist of trusted remote hosts. - Alternatively, remove the
/api/videoroute entirely if your application only uses build-timeimportof local video files and does not use<Video src="https://...">with string URLs at runtime.
References
src/request-handler.ts, the vulnerable GET handlersrc/assets.ts,getAssetPath(), where the local-vs-remote branching occurssrc/utils/utils.ts,isRemote(), the sole guard between the two branchessrc/config.ts,loadAsset(), which performs the unconstrainedfs.readFile
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,playbackIdvalues stored invideos/*.json)
Any application that mounted /api/video following the documented one-liner is affected.
Affected versions
Security releases
Kodem intelligence
Severity tells you how bad this could be in the worst case. It does not tell you whether you are exposed. Exploitability and impact are functions of runtime truth: whether the vulnerable code is present, reachable, and actually executes in your application. A vulnerable package can sit in your dependency tree and never run.
Kodem, an Intelligent Application Security platform, uses runtime intelligence to reveal which vulnerabilities actually execute in production, so teams prioritize the ones that genuinely matter. Kodem's runtime-powered SCA identifies whether this CVE is reachable in your applications.
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2.8.1
Frequently Asked Questions
- What is CVE-2026-54150? CVE-2026-54150 is a medium-severity security vulnerability in next-video (npm), affecting versions <= 2.8.0. It is fixed in 2.8.1.
- Which versions of next-video are affected by CVE-2026-54150? next-video (npm) versions <= 2.8.0 is affected.
- Is there a fix for CVE-2026-54150? Yes. CVE-2026-54150 is fixed in 2.8.1. Upgrade to this version or later.
- Is CVE-2026-54150 exploitable, and should I be worried? Whether CVE-2026-54150 is exploitable in your environment depends on whether the vulnerable code is present and reachable. A CVSS score is a worst-case rating; it does not account for your specific deployment, configuration, or usage patterns. Kodem, an Intelligent Application Security platform, uses runtime intelligence to show which vulnerabilities actually execute in production, so you can focus on the ones that represent real risk. Get a demo
- What actually determines whether CVE-2026-54150 is exploitable, and how bad it is? Exploitability and impact are not fixed properties of a CVE. They depend on runtime truth: whether the vulnerable code is present, reachable, and actually executes in your application. A high CVSS score on a dependency that never runs is not the same as real risk. Kodem, an Intelligent Application Security platform, uses runtime intelligence to reveal which vulnerabilities actually execute in production, so teams prioritize the ones that genuinely matter.
- How do I fix CVE-2026-54150? Upgrade
next-videoto 2.8.1 or later.