Cross-Site Scripting in Langgenius Dify Image Upload Functionality
CVE-2026-6619

5.1MEDIUM

Key Information:

Vendor

Langgenius

Status
Dify
Vendor
CVE Published:
20 April 2026

Badges

👾 Exploit Exists🟡 Public PoC

What is CVE-2026-6619?

A cross-site scripting vulnerability exists in the image upload functionality of Langgenius Dify, specifically in the 'openInNewTab' function of 'image-preview.tsx'. This vulnerability allows attackers to manipulate the 'filename' argument, which can lead to the injection of malicious scripts. As a result, these scripts may be executed in the context of users' browsers, compromising user data and security. The issue affects versions of Dify up to 1.13.3 and has been publicly disclosed, with potential for remote exploitation. Despite prior notifications to the vendor, there has been no response regarding remediation efforts.

Affected Version(s)

dify 1.13.0

dify 1.13.1

dify 1.13.2

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-2026-6619 - Proof of Concept

References

https://vuldb.com/vuln/358254
vdb-entrytechnical-description
https://vuldb.com/vuln/358254/cti
signaturepermissions-required
https://vuldb.com/submit/792242
third-party-advisory

CVSS V4

Score:
5.1
Severity:
MEDIUM
Confidentiality:
None
Integrity:
Low
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

Eric-g (VulDB User)
VulDB CNA Team
.