Machine-written summary
Summary written by Claude Haiku from the source advisory. Not reviewed by a person.
Vite versions 6.4.4 up to but not including 6.4.5 are affected: files matched by server.fs.deny can be returned to the browser when query parameters such as raw are appended. Exploitation requires the Vite dev server to be exposed to the network (via --host or server.host), the sensitive file to sit inside server.fs.allow directories, and it to be matched by server.fs.deny. The fix is to upgrade to Vite 6.4.5.
Not analysed yet
We haven’t published our analysis of this Advisory yet. Once a person has reviewed it, this page will say what’s vulnerable, what has to be true for your app to be affected, and how to check.
Severity and exploitation
| Score | Rating | CVSS | Vector | Source |
|---|---|---|---|---|
| 6.9 | Medium | 4.0 | CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:L/VI:N/VA:N/SC:H/SI:N/SA:N | CNA (GitHub_M) |
- CISA KEV Not listed.
- EPSS 0.0029, the 22nd percentile, on 5 Nov 2026: FIRST’s estimate of the chance of exploitation in the next 30 days.
Timeline
- 28 Oct 2026, 20:33 UTC Confirmed by the CVE List
- 28 Oct 2026, 21:16 UTC Confirmed by NVD
- 31 Oct 2026, 13:32 UTC First seen by agentprime
- 31 Oct 2026, 13:32 UTC Confirmed by OSV
Sources
- GitHub Advisory Database: GHSA-8g5g-mxqh-grgj
- OSV: GHSA-8g5g-mxqh-grgj
- github.com/vitejs/vite/security/advisories/GHSA-8g5g-mxqh-grgj
- nvd.nist.gov/vuln/detail/CVE-2026-118662
- github.com/vitejs/vite/pull/22160
- github.com/vitejs/vite/pull/23855
- github.com/vitejs/vite/commit/91e40d7bf9777057bbd31c3eb036a54c9465697e
- github.com/vitejs/vite
- github.com/vitejs/vite/releases/tag/v6.4.5