---
id: CVE-2026-69116
title: >-
  FlyEnv before 4.18.0 fails to sanitize HTML from markdown rendering and AI
  chat content passed to Vue v-html directives
summary: >-
  FlyEnv before 4.18.0 fails to sanitize HTML from markdown rendering and AI
  chat content passed to Vue v-html directives. Attackers can inject malicious
  scripts through markdown sources or chat messages that execute in the Electron
  render…
severity: medium
cvss: 6.1
cvssVector: 'CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N'
cwe:
  - CWE-79
vendor: xpf0000
product: FlyEnv
affected:
  - FlyEnv < 4.18.0
published: '2026-08-10'
updated: '2026-09-17'
sourceUpdated: '2026-09-17T18:17:04.583'
source: NVD
sourceUrl: 'https://nvd.nist.gov/vuln/detail/CVE-2026-69116'
references:
  - url: >-
      https://github.com/xpf0000/FlyEnv/commit/68fd6d7b200273ad0a8bce09424b8bd87134cfb6
    label: disclosure@vulncheck.com
  - url: 'https://github.com/xpf0000/FlyEnv/issues/809'
    label: disclosure@vulncheck.com
  - url: 'https://github.com/xpf0000/FlyEnv/pull/810'
    label: disclosure@vulncheck.com
  - url: 'https://github.com/xpf0000/FlyEnv/releases/tag/v4.18.0'
    label: disclosure@vulncheck.com
  - url: >-
      https://www.vulncheck.com/advisories/flyenv-cross-site-scripting-via-v-html
    label: disclosure@vulncheck.com
tags:
  - nvd
  - cve.org
  - exploit-available
exploitAvailable: true
ssvc:
  exploitation: poc
  automatable: 'no'
  technicalImpact: partial
  timestamp: '2026-08-11T14:35:06.038040Z'
epss: 0.00243
epssPercentile: 0.15836
ingestedAt: '2026-09-16T21:05:36.838Z'
---

## Overview

FlyEnv before 4.18.0 fails to sanitize HTML from markdown rendering and AI chat content passed to Vue v-html directives. Attackers can inject malicious scripts through markdown sources or chat messages that execute in the Electron renderer process with access to Node.js APIs and the filesystem.

## Remediation

Refer to the linked advisories for vendor-supplied fixes and affected version ranges.