Cross-Site Scripting Vulnerability in langgenius dify WebApp Sign-In Component
CVE-2026-85022

5.1MEDIUM

Key Information:

Vendor

Langgenius

Status
Dify
Vendor
CVE Published:
3 September 2026

Badges

👾 Exploit Exists🟡 Public PoC

What is CVE-2026-85022?

A vulnerability exists in the langgenius dify product, specifically in version 1.13.0, due to improper handling of the redirect_url parameter in the router.replace function found in the webapp-signin component. This flaw allows attackers to inject malicious scripts that execute in the context of another user's browser session, leading to potential data theft or unauthorized actions. The vulnerability can be exploited remotely, making it critical for users to address this security issue. Despite early contact with the vendor about this vulnerability, no response was received.

Affected Version(s)

dify 1.13.0

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-2026-85022 - Proof of Concept

References

https://vuldb.com/vuln/398289
vdb-entrytechnical-description
https://vuldb.com/vuln/398289/cti
signaturepermissions-required
https://vuldb.com/cve/CVE-2026-85022
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

trebledj (VulDB User)
VulDB CNA Team
.