Answer in brief
CVE-2026-112947 records a Medium severity (CVSS 6.3) vulnerability in Vite: First 4 bytes of files outside of `server.fs` setting is exposed by `?vite-wasm-instance`. The current sources do not mark it as known exploited. The current feed maps vitejs/vite (generic), vitejs/vite-plus (generic). Check affected ranges and fixed versions before updating.
Analysis pending evidence review
HOL Guard separates source facts from reviewed analysis. See the methodology.
CVSS is 6.3. The current sources do not mark it as known exploited. Treat this as a source-backed prioritization signal, not a statement about your environment.
Analysis status
Analysis pending evidence review
Factual feed record only; HOL analysis is not approved for indexing. Read the methodology.
The current feed maps vitejs/vite (generic), vitejs/vite-plus (generic). Check affected ranges and fixed versions before updating.
| Package | Affected range | Fixed version |
|---|---|---|
| vitejs/vitegeneric | >=8.3.0 <8.3.3 || >=8.2.0 <8.2.4 | 8.3.3, 8.2.4 |
| vitejs/vite-plusgeneric | >=0.2.8 <1.1.0 | 1.1.0 |
Published upstream
Oct 20, 2026
Evidence: source:cvelist:source_dates:source-dates:recordSource modified
Oct 20, 2026
Evidence: source:cvelist:source_dates:source-dates:recordFirst seen by HOL
Oct 20, 2026
Vite is a frontend tooling framework for JavaScript. From 8.2.0 until 8.2.4 and 8.3.3, the first 4 bytes of files outside of server.fs setting can be returned to the browser by a request containing ?vite-wasm-instance. Requests containing the ?vite-wasm-instance query are handled by the internal Wasm plugin's load hook. The hook removes the query and reads the resulting path directly from disk, but the server.fs checks were not applied. After reading the file, Vite attempts to parse it as WebAssembly. When that parse fails, Node and deno throws an error that contains the first 4 bytes of the file. This vulnerability is fixed in 8.2.4 and 8.3.3.
Quoted source text, attributed separately from HOL analysis.