Information disclosure in Vitejs Vite
CVE-2025-31486
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.
Vulnerability class: Information Disclosure
EPSS: 0.402 (98.5th percentile) — read the EPSS interpretation.
CVSS v3 metric
CVSS v3 base score 5.3 (Medium). Vector: CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:H/I:N/A:N.
Affected products
- Vitejs Vite — versions < 4.5.12, >=5.0.0, < 5.4.17, >=6.0.0, < 6.0.14
Weakness classification (CWE)
Public proof-of-concept exploits
References
- security-advisories@github.com (x_refsource_CONFIRM)
- security-advisories@github.com (x_refsource_MISC)
- security-advisories@github.com (x_refsource_MISC)
Frequently asked questions
- What is CVE-2025-31486?
- CVE-2025-31486 is a medium-severity vulnerability in Vitejs Vite, classified under Information Disclosure. CVSS score: 5.3/10. Published 2025-04-03.
- How severe is CVE-2025-31486?
- Medium severity. CVSS v3 base score is 5.3 out of 10.
- Is CVE-2025-31486 known to be exploited?
- 13 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.