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Vulnerabilities

Vulnerability · CVE-2026-39365

Vite is a frontend tooling framework for JavaScript.

Published Apr 7, 2026 · catalog updated Jul 24, 2026 · Vite is a frontend

Patch now

CVE-2026-39365 is in the CISA known-exploited catalog. Confirm Vite is a frontend against the vendor advisory and apply that fix. The CVSS score does not change the priority.

Gaps on this record

  • The stored product name is a package slug. The name on this page is taken from the title (Vite is a frontend).
  • No version range is stored. A customer cannot check an installed version against this record.
Severity
Medium6.3
Known exploitation
CISA KEV and VulnCheck KEV
EPSS
0.98%
Remediation
Remediation guidance
Affected products
cpe vitejs/vite · cpe voidzero/vite+ · vendor vitejs vite

Vite is a frontend tooling framework for JavaScript. From 6.0.0 to before 6.4.2, 7.3.2, and 8.0.5, the dev server’s handling of .map requests for optimized dependencies resolves file paths and calls readFile without restricting ../ segments in the URL. As a result, it is possible to bypass the server.fs.strict allow list and retrieve .map files located outside the project root, provided they can be parsed as valid source map JSON. This vulnerability is fixed in 6.4.2, 7.3.2, and 8.0.5. VulnCheck canary evidence.

Are you affected?

Enter the version you run. The result uses only the ranges stored on this record.

The check returns affected, not affected, or incomplete. It does not guess a version that is missing from the record.

  • cpe vitejs/viteversion unspecified
  • cpe voidzero/vite+version unspecified
  • vendor vitejs viteversion unspecified

How to fix CVE-2026-39365

What to do

Three questions, each answered from this record only. Confirm the vendor advisory before you patch.

Should you patch?

CVE-2026-39365 is in the CISA known-exploited catalog. Confirm Vite is a frontend against the vendor advisory and apply that fix. The CVSS score does not change the priority.

Which versions are affected?

Affected version ranges are not on this record. Apply remediations or mitigations per vendor instructions or discontinue use of the product if remediation or mitigations are unavailable.

What should an analyst verify?

CWE-22: Path Traversal. EPSS 0.98%. The CISA KEV listing is the exploitation evidence. No Exploit-DB or Metasploit reference is linked. Use the source links for the original advisory.

Code

The project this record applies to. Exploit listings stay in References.

No public source repository is identified for this product.

Timeline

Detection, updates, and resolution for this record.

  1. Apr 7, 2026 · NIST NVD

    Detected

    Vite is a frontend tooling framework for JavaScript. From 6.0.0 to before 6.4.2, 7.3.2, and 8.0.5, the dev server’s handling of .map requests for optimized dependencies resolves file paths and calls readFile without restricting ../ segments in the URL. As a result, it is possible to bypass the server.fs.strict allow list and retrieve .map files located outside the project root, provided they can b

  2. May 22, 2026 · CISA KEV

    Known exploited

    Apply remediations or mitigations per vendor instructions or discontinue use of the product if remediation or mitigations are unavailable.

  3. Jul 24, 2026 · NIST NVD

    Updated

    Vite is a frontend tooling framework for JavaScript. From 6.0.0 to before 6.4.2, 7.3.2, and 8.0.5, the dev server’s handling of .map requests for optimized dependencies resolves file paths and calls readFile without restricting ../ segments in the URL. As a result, it is possible to bypass the server.fs.strict allow list and retrieve .map files located outside the project root, provided they can b

Sources

  • CVE.orgVulnerability recordCVE-2026-39365

    Official CVE identifier

    cve.org
  • FIRST EPSSExploitation probabilityCVE-2026-39365

    30-day exploitation probability 1.0%

    first.org
  • NIST NVDVulnerability recordCVE-2026-39365

    Vite is a frontend tooling framework for JavaScript. From 6.0.0 to before 6.4.2, 7.3.2, and 8.0.5, the dev server’s handling of .map requests for optimized dependencies resolves file paths and calls readFile without restricting ../ segments in the URL. As a result, it is possible

    nvd.nist.gov
  • VulnCheck KEVConfirmed exploitationCVE-2026-39365

    Vite is a frontend tooling framework for JavaScript. From 6.0.0 to before 6.4.2, 7.3.2, and 8.0.5, the dev server’s handling of .map requests for optimized dependencies resolves file paths and calls readFile without restricting ../ segments in the URL. As a result, it is possible

    vulncheck.com

References

Freshness

Last verified in this catalog Oct 18, 2026. Significant claims (KEV, EPSS, CVSS, affected ranges) come from the source rows above — open the original publisher for the authoritative advisory.