Vite: Files outside server.fs.allow could be served when project paths match system paths on non-Windows machine

Exploitation

No confirmed exploitation recorded. Patch Next marks exploitation only from CISA KEV.

CVSS 4.0

6.3 · CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N · score source

EPSS

• CVE-2026-112946: 0.85% estimated exploitation activity in the next 30 days; percentile 58.30 (FIRST EPSS, 2026-11-03). This is a model estimate, not proof of exploitation or customer exposure.

As published by the source; long descriptions are shortened.

Summary The content of files outside server.fs setting can be returned to the browser if the project imports a file path concatenated with the root. For example, if the project references <path-to-project-root/etc/hosts, the content of /etc/hosts was possible to be returned. The content of files outside the server.fs.allow option can be returned to the browser when a project imports a file whose root-relative path matches an absolute path on the host. For example, referencing <project-root/etc/hosts could make Vite return the host's /etc/hosts file. Impact Only apps that meet all of the following conditions are affected: - explicitly expose the Vite dev server to the network (using --host or the server.host option) - contain an imported file whose root-relative browser URL is also the absolute path of a readable file on the host - The sensitive file is not matched by server.fs.deny - the dev server is not running on Windows Details When Vite analyzes an in-root import, it rewrites…

Published by the source

21 Oct 2026, 16:47 UTC

Last modified by the source

21 Oct 2026, 17:00 UTC

Source last checked

26 Oct 2026, 13:07 UTC

1. Revision 4 · amended · 26 Oct 2026

   Amended from ghsa record GHSA-rq7h-c2jc-7f22

2. Revision 3 · amended · 25 Oct 2026

   Reviewed OSV alias/range/CVSS4 correction; package source scopes and original publication preserved. No customer finding resolved.

3. Revision 2 · amended · 24 Oct 2026

   Amended from osv record GHSA-rq7h-c2jc-7f22

4. Revision 1 · created · 23 Oct 2026

   Published from ghsa record GHSA-rq7h-c2jc-7f22

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# Patch Next advisory brief: CVE-2026-112946

Advisory: Vite: Files outside `server.fs.allow` could be served when project paths match system paths on non-Windows machine
IDs: CVE-2026-112946, GHSA-rq7h-c2jc-7f22
Record: https://patchnext.com/advisories/cve-2026-112946 (revision 4, source checked 26 Oct 2026, 13:07 UTC)
Inventory: none attached. This brief comes from a public page and does not say whether any deployment is affected.
Severity: Medium (CVSS 6.3)
Exploitation: no confirmed exploitation recorded. Patch Next confirms exploitation only from CISA KEV.
Vendor response: Vendor fix available; fixed versions by package: vite 8.3.3, 8.2.4, 8.1.6, 7.3.7, 6.4.4; vite-plus 1.1.0. A vendor fix does not mean a deployment is fixed.

## Affected components
- npm vite: affected >= 8.3.0, <= 8.3.2; >= 8.2.0, <= 8.2.3; >= 8.0.0, <= 8.1.5; >= 7.0.0, <= 7.3.6; <= 6.4.3; fixed in 7.3.7, 8.2.4, 8.1.6, 8.3.3, 6.4.4
- npm vite-plus: affected <= 1.0.0; fixed in 1.1.0

## Suggested inspection (read-only)
- `npm ls vite --all`: lists every installed copy and version, including transitive ones. Run in the project root after `npm ci`.
- `npm ls vite-plus --all`: lists every installed copy and version, including transitive ones. Run in the project root after `npm ci`.

## Supported action
Upgrade each affected component to a fixed version on its release line. For a transitive dependency, upgrade the parent package or add an override or constraint, then regenerate the lockfile. Redeploy every environment that ran an affected version.

## Required regression checks
- Run the test suite and a production build.
- Exercise the features that depend on vite, vite-plus.
- Repeat the inspection and confirm that only fixed versions remain installed.

## Rollback considerations
- Keep the previous lockfile and deployment artifact. Rolling back reinstates the vulnerable version, so apply any documented mitigation while you fix forward.

## Unresolved questions
- Which deployments run an affected version?
- Exploitation status can change. Check again before lowering the priority.
- Mark the work resolved only after the fixed version is verified in production.

## Sources
- Verified: https://github.com/advisories/GHSA-rq7h-c2jc-7f22 (GitHub-reviewed advisory GHSA-rq7h-c2jc-7f22 lists affected ranges: npm vite >=8.3.0 =8.2.0 =8.0.0 =7.0.0 =0 =0 <=1.0.0)
- Verified: https://osv.dev/vulnerability/GHSA-rq7h-c2jc-7f22 (OSV record GHSA-rq7h-c2jc-7f22 lists affected ranges: npm vite >=8.3.0 =8.2.0 =8.0.0 =7.0.0 =0 =0 <1.1.0 (fixed))

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