Cross-Site Scripting Vulnerability in FlyEnv Product by Vendor
CVE-2026-69116

5.3MEDIUM

Key Information:

Vendor

Xpf0000

Status
Flyenv
Vendor
CVE Published:
10 August 2026

Badges

👾 Exploit Exists🟡 Public PoC

What is CVE-2026-69116?

In FlyEnv versions before 4.18.0, the application does not adequately sanitize HTML content generated from markdown and AI chat inputs before rendering it into the DOM using Vue's v-html directive. This flaw allows attackers to inject and execute malicious scripts within the Electron renderer process, potentially compromising access to Node.js APIs and the filesystem. Users of affected versions are encouraged to update to the latest release to mitigate this risk.

Affected Version(s)

FlyEnv 0 < 4.18.0

FlyEnv 4.18.0

Exploit Proof of Concept (PoC)

PoC code is written by security researchers to demonstrate the vulnerability can be exploited. PoC code is also a key component for weaponization which could lead to ransomware.

CVE-2026-69116 - Proof of Concept

References

https://github.com/xpf0000/FlyEnv/issues/809
technical-descriptionexploit
https://github.com/xpf0000/FlyEnv/releases/tag/v4.18.0
release-notes
https://github.com/xpf0000/FlyEnv/pull/810
issue-tracking

CVSS V4

Score:
5.3
Severity:
MEDIUM
Confidentiality:
None
Integrity:
None
Availability:
None
Attack Vector:
Network
Attack Complexity:
Low
Attack Required:
None
Privileges Required:
Undefined
User Interaction:
Unknown

Timeline

  • 🟡

    Public PoC available

  • 👾

    Exploit known to exist

  • Vulnerability published

  • Vulnerability Reserved

Credit

YU SUN
.