CVE-2025-31486
The contents of arbitrary files can be returned to the browser.
Does this matter?
EPSS puts the probability of exploitation in the next 30 days at 40.5%, higher than 99% of all known CVEs. Patch or mitigate before the next change window.
Description
Vite is a frontend tooling framework for javascript. The contents of arbitrary files can be returned to the browser. By adding ?.svg with ?.wasm?init or with sec-fetch-dest: script header, the server.fs.deny restriction was able to bypass. This bypass is only possible if the file is smaller than build.assetsInlineLimit (default: 4kB) and when using Vite 6.0+. Only apps explicitly exposing the Vite dev server to the network (using --host or server.host config option) are affected. This vulnerability is fixed in 4.5.12, 5.4.17, 6.0.14, 6.1.4, and 6.2.5.
- CVSS 3.1
- 5.3 MEDIUMCVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:H/I:N/A:N
- EPSS
- 40.46% probability · 99th percentile
- CISA KEV
- Not listed
- Weakness
- CWE-200, CWE-284
- Source
- security-advisories@github.com
References
- https://github.com/vitejs/vite/blob/037f801075ec35bb6e52145d659f71a23813c48f/packages/vite/src/node/plugins/asset.ts#L285-L290
- https://github.com/vitejs/vite/commit/62d7e81ee189d65899bb65f3263ddbd85247b647
- https://github.com/vitejs/vite/security/advisories/GHSA-xcj6-pq6g-qj4x
- https://github.com/vitejs/vite/security/advisories/GHSA-xcj6-pq6g-qj4x
Source: NVD record, EPSS from FIRST.org, KEV from CISA. Refreshed daily.