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Fencer Vulns
high 7.5

CVE-2026-39364 json

Vite has a `server.fs.deny` bypass with queries

published 2026-04-06 7 mo ago modified 2026-09-10 1 mo ago also GHSA-v2wj-q39q-566r , EUVD-2026-19873

cvss
7.5
version 3.1, CNA
cisa kev
Not listed
not in CISA's catalog
epss
2.3%
EPSS 2.3% chance of exploitation in 30 days, percentile 83%
public exploits
0
none known, plus a Nuclei check

Summary

Vite is a frontend tooling framework for JavaScript. From 7.1.0 to before 7.3.2 and 8.0.5, on the Vite dev server, files that should be blocked by server.fs.deny (e.g., .env, *.crt) can be retrieved with HTTP 200 responses when query parameters such as ?raw, ?import&raw, or ?import&url&inline are appended. This vulnerability is fixed in 7.3.2 and 8.0.5.

Patch / fix

  • npm vite 7.3.2, 8.0.5
  • Red Hat Red Hat Ansible Automation Platform 2.6 1779783248

Vendor advisories

What the vendors themselves say about their products: affected, fixed or not affected, and what to do.

red hat product security vex CVE-2026-39364 updated cvss 7.5

vite: Vite: Information disclosure via query parameter manipulation on the development server

  • Red Hat Ansible Automation Platform 2 automation-controller, redhat-user-workloads/ansible-tenant/ansible-automation-platform-26/mcp-server-rhel9
    affected: workaround, no fix available, no fix planned “Will not fix”
  • Red Hat Build of Keycloak vite
    affected: workaround, no fix planned “Will not fix”
  • Red Hat Build of Podman Desktop podman-desktop-macos-1-0, podman-desktop-windows-1-0 Red Hat Build of Podman Desktop - Tech Preview redhat-user-workloads/red-hat-desktop-tenant/rhel-ext, redhat-user-workloads/red-hat-desktop-tenant/bootc-ext, redhat-user-workloads/red-hat-desktop-tenant/openshift-local-ext
    affected: workaround, no fix available
  • Red Hat Ansible Automation Platform 2.6 ansible-automation-platform-tech-preview/mcp-server-rhel9 1779783248
    fixed: vendor fix RHSA-2026:24866
  • Red Hat Advanced Cluster Security 4 rhacs-eng/release-main
    not affected: component not present
  • Red Hat Ansible Automation Platform 2 automation-gateway, automation-platform-ui, automation-eda-controller, redhat-user-workloads/ansible-tenant/ansible-automation-platform-26/gateway-rhel9 Red Hat Ansible Automation Platform 2.6 ansible-automation-platform-26/hub-rhel9 1779761061, ansible-automation-platform-26/gateway-rhel9 1779773804, ansible-automation-platform-26/hub-web-rhel9 1779765164, ansible-automation-platform-26/receptor-rhel9 1779770938, ansible-automation-platform-26/mcp-tools-rhel9 1779772877, ansible-automation-platform-26/controller-rhel9 1779762270, +23 more Red Hat JBoss Enterprise Application Platform 8 vite Red Hat JBoss Enterprise Application Platform Expansion Pack vite
    not affected: vulnerable code not present
  • Red Hat OpenShift Container Platform 4 redhat-user-workloads/ocp-art-tenant/art-images
    not affected: component not present

Red Hat CSAF VEX © Red Hat, Inc., from https://security.access.redhat.com/data/csaf/v2/vex/; changed: reduced to product statuses and remediations. CC BY 4.0 · csaf

CISA SSVC

Exploitation
Proof of concept is public
Automatable
no
Technical impact
partial
Assessed
7 mo ago

Exploit prediction

2.26% chance of exploitation in the next 30 days, higher than 83% of all scored CVEs (FIRST EPSS, 2026-11-08).

Exploits and checks

  • Nuclei template Vite Dev Server - Directory Traversal nuclei detection template
  • github.com https://github.com/vitejs/vite/security/advisories/GHSA-v2wj-q39q-566r referenced PoC, tagged "exploit" by a source, unverified

CVSS scores

assigned by version score vector
CNA 4.0 8.2 CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N
CISA ADP 3.1 7.5 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N
CNA 4.0 8.2 CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X
NVD 3.1 7.5 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N
CNA 3.1 7.5 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N

Affected packages

ecosystem package affected fixed in
npm vite
>=8.0.0, <8.0.5
>=7.1.0, <7.3.2
8.0.5
7.3.2

Affected products

  • vitejs vite
  • vitejs vite-plus
  • Red Hat Red Hat Ansible Automation Platform 2.6
  • Red Hat Red Hat Advanced Cluster Security 4
  • Red Hat Red Hat Ansible Automation Platform 2
  • Red Hat Red Hat Build of Keycloak
  • Red Hat Red Hat Build of Podman Desktop
  • Red Hat Red Hat Build of Podman Desktop - Tech Preview
  • Red Hat Red Hat JBoss Enterprise Application Platform 8
  • Red Hat Red Hat JBoss Enterprise Application Platform Expansion Pack
  • Red Hat Red Hat OpenShift Container Platform 4

Classification

Weakness
  • CWE-180 Incorrect Behavior Order: Validate Before Canonicalize
  • CWE-284 Improper Access Control
  • CWE-472 External Control of Assumed-Immutable Web Parameter

References

Sources

Fencer Vulns keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.