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
- Public exploits
- None in Exploit-DB
- CISA KEV
- Not listed
- Weakness
- CWE-200, CWE-284
- Source
- security-advisories@github.com
EPSS 40.5% since 26 October 2026; no change recorded yet. The dashed line is the ten per cent mark our analysts treat as “patch before the next change window”. Points are recorded when the score first appears and whenever it moves by a percentage point or more.
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, exploits from Exploit-DB. Refreshed daily. Download this record as JSON.