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

{
  "id": "95fc084f9458a82932c096835bb38fb44ebbedd7ad925c0fe965a258713fabad",
  "url": "https://osv.dev/vulnerability/GHSA-rq7h-c2jc-7f22",
  "method": "structured",
  "payload": {
    "kind": "advisory",
    "title": "Vite: Files outside `server.fs.allow` could be served when project paths match system paths on non-Windows machine",
    "summary": "### 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 `/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 `/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](https://vite.dev/config/server-options#server-host)) - 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`](https://vite.dev/config/server-options#server-fs-deny) - the dev server is not running on Windows ### Details When Vite analyzes an in-root import, it rewrites the resolved module ID to a browser URL such as `/etc/hostname`. In affected versions, Vite converts that URL with `fsPathFromUrl` and adds the result to `safeModulePaths`. Because `fsPathFromUrl` ensures a leading slash without resolving the URL against the project root, the project URL `/etc/hostname` is recorded as if it were the absolute filesystem path `/etc/hostname`. For a later reques",
    "evidence": "osv:GHSA-rq7h-c2jc-7f22",
    "products": [
      {
        "name": {
          "value": "vite",
          "evidence": "/affected/0/package/name"
        },
        "prerequisites": [],
        "fixed_versions": [
          {
            "value": "8.3.3",
            "evidence": "/affected/0/ranges"
          }
        ],
        "affected_versions": []
      },
      {
        "name": {
          "value": "vite",
          "evidence": "/affected/1/package/name"
        },
        "prerequisites": [],
        "fixed_versions": [
          {
            "value": "8.2.4",
            "evidence": "/affected/1/ranges"
          }
        ],
        "affected_versions": []
      },
      {
        "name": {
          "value": "vite",
          "evidence": "/affected/2/package/name"
        },
        "prerequisites": [],
        "fixed_versions": [
          {
            "value": "8.1.6",
            "evidence": "/affected/2/ranges"
          }
        ],
        "affected_versions": []
      },
      {
        "name": {
          "value": "vite",
          "evidence": "/affected/3/package/name"
        },
        "prerequisites": [],
        "fixed_versions": [
          {
            "value": "7.3.7",
            "evidence": "/affected/3/ranges"
          }
        ],
        "affected_versions": []
      },
      {
        "name": {
          "value": "vite",
          "evidence": "/affected/4/package/name"
        },
        "prerequisites": [],
        "fixed_versions": [
          {
            "value": "6.4.4",
            "evidence": "/affected/4/ranges"
          }
        ],
        "affected_versions": []
      },
      {
        "name": {
          "value": "vite-plus",
          "evidence": "/affected/5/package/name"
        },
        "prerequisites": [],
        "fixed_versions": [
          {
            "value": "1.1.0",
            "evidence": "/affected/5/ranges"
          }
        ],
        "affected_versions": []
      }
    ],
    "severity": "medium",
    "structured": {
      "id": "GHSA-rq7h-c2jc-7f22",
      "aliases": [
        "CVE-2026-112946",
        "GHSA-rq7h-c2jc-7f22"
      ],
      "metrics": [
        {
          "type": "CVSS_V4",
          "score": "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"
        }
      ],
      "affected": [
        {
          "ranges": [
            {
              "type": "SEMVER",
              "events": [
                {
                  "introduced": "8.3.0"
                },
                {
                  "fixed": "8.3.3"
                }
              ]
            }
          ],
          "package": {
            "name": "vite",
            "purl": "pkg:npm/vite",
            "ecosystem": "npm"
          },
          "database_specific": {
            "source": "https://github.com/github/advisory-database/blob/main/advisories/github-reviewed/2026/10/GHSA-rq7h-c2jc-7f22/GHSA-rq7h-c2jc-7f22.json",
            "last_known_affected_version_range": "<= 8.3.2"
          }
        },
        {
          "ranges": [
            {
              "type": "SEMVER",
              "events": [
                {
                  "introduced": "8.2.0"
                },
                {
                  "fixed": "8.2.4"
                }
              ]
            }
          ],
          "package": {
            "name": "vite",
            "purl": "pkg:npm/vite",
            "ecosystem": "npm"
          },
          "database_specific": {
            "source": "https://github.com/github/advisory-database/blob/main/advisories/github-reviewed/2026/10/GHSA-rq7h-c2jc-7f22/GHSA-rq7h-c2jc-7f22.json",
            "last_known_affected_version_range": "<= 8.2.3"
          }
        },
        {
          "ranges": [
            {
              "type": "SEMVER",
              "events": [
                {
                  "introduced": "8.0.0"
                },
                {
                  "fixed": "8.1.6"
                }
              ]
            }
          ],
          "package": {
            "name": "vite",
            "purl": "pkg:npm/vite",
            "ecosystem": "npm"
          },
          "database_specific": {
            "source": "https://github.com/github/advisory-database/blob/main/advisories/github-reviewed/2026/10/GHSA-rq7h-c2jc-7f22/GHSA-rq7h-c2jc-7f22.json",
            "last_known_affected_version_range": "<= 8.1.5"
          }
        },
        {
          "ranges": [
            {
              "type": "SEMVER",
              "events": [
                {
                  "introduced": "7.0.0"
                },
                {
                  "fixed": "7.3.7"
                }
              ]
            }
          ],
          "package": {
            "name": "vite",
            "purl": "pkg:npm/vite",
            "ecosystem": "npm"
          },
          "database_specific": {
            "source": "https://github.com/github/advisory-database/blob/main/advisories/github-reviewed/2026/10/GHSA-rq7h-c2jc-7f22/GHSA-rq7h-c2jc-7f22.json",
            "last_known_affected_version_range": "<= 7.3.6"
          }
        },
        {
          "ranges": [
            {
              "type": "SEMVER",
              "events": [
                {
                  "introduced": "0"
                },
                {
                  "fixed": "6.4.4"
                }
              ]
            }
          ],
          "package": {
            "name": "vite",
            "purl": "pkg:npm/vite",
            "ecosystem": "npm"
          },
          "database_specific": {
            "source": "https://github.com/github/advisory-database/blob/main/advisories/github-reviewed/2026/10/GHSA-rq7h-c2jc-7f22/GHSA-rq7h-c2jc-7f22.json",
            "last_known_affected_version_range": "<= 6.4.3"
          }
        },
        {
          "ranges": [
            {
              "type": "SEMVER",
              "events": [
                {
                  "introduced": "0"
                },
                {
                  "fixed": "1.1.0"
                }
              ]
            }
          ],
          "package": {
            "name": "vite-plus",
            "purl": "pkg:npm/vite-plus",
            "ecosystem": "npm"
          },
          "database_specific": {
            "source": "https://github.com/github/advisory-database/blob/main/advisories/github-reviewed/2026/10/GHSA-rq7h-c2jc-7f22/GHSA-rq7h-c2jc-7f22.json",
            "last_known_affected_version_range": "<= 1.0.0"
          }
        }
      ],
      "modified": "2026-10-21T17:00:06.336868869Z",
      "provider": "osv",
      "references": [
        "https://github.com/vitejs/vite/security/advisories/GHSA-rq7h-c2jc-7f22",
        "https://nvd.nist.gov/vuln/detail/CVE-2026-112946",
        "https://github.com/vitejs/vite/pull/23656",
        "https://github.com/vitejs/vite/commit/170b92791421bcd484f7325936d989a82d6bd4aa",
        "https://github.com/vitejs/vite/commit/45c0e3392a298626955a0ab93a8e51232daac721",
        "https://github.com/vitejs/vite/commit/c3e06f92e969952466b4e2f5801e85e1e00cd905",
        "https://github.com/vitejs/vite/commit/e570d8d016096b5f8f6f09808376ca6cf73f27d0",
        "https://github.com/vitejs/vite/commit/f0d76c7da13d5e794807b82f0b86c1931a8438e3",
        "https://github.com/vitejs/vite"
      ],
      "provider_metadata": {
        "cwe_ids": [
          "CWE-22",
          "CWE-284"
        ],
        "severity": "MODERATE",
        "github_reviewed": true,
        "nvd_published_at": "2026-10-20T16:17:05Z",
        "github_reviewed_at": "2026-10-21T16:47:42Z"
      }
    },
    "related_cves": [
      {
        "value": "CVE-2026-112946",
        "evidence": "/aliases"
      }
    ],
    "security_relevant": true,
    "severity_evidence": "/severity/0/score"
  },
  "source_id": "core-osv",
  "document_id": 394544,
  "published_at": "2026-10-21T16:47:42+00:00"
}