Security Flaw in langgenius Dify Affects Template Engine Handler
CVE-2026-18632

5.3MEDIUM

Key Information:

Vendor

Langgenius

Status
Dify
Vendor
CVE Published:
3 August 2026

Badges

👾 Exploit Exists🟡 Public PoC

What is CVE-2026-18632?

A notable vulnerability has been identified in langgenius Dify versions up to 1.14.2, concerning the Jinja2 Handler in the file api/core/helper/code_executor/jinja2/jinja2_transformer.py. This flaw stems from improper neutralization of special elements utilized in a template engine, specifically within the jinja2.Template function. Attackers may exploit this weakness remotely, potentially leading to unauthorized code execution. Although the vendor was notified about this vulnerability prior to its public disclosure, there was no response, raising concerns for users depending on this software.

Affected Version(s)

dify 1.14.0

dify 1.14.1

dify 1.14.2

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-2026-18632 - Proof of Concept

References

https://vuldb.com/vuln/385555
vdb-entrytechnical-description
https://vuldb.com/vuln/385555/cti
signaturepermissions-required
https://vuldb.com/cve/CVE-2026-18632
third-party-advisory

CVSS V4

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

Timeline

  • 🟡

    Public PoC available

  • 👾

    Exploit known to exist

  • Vulnerability published

  • Vulnerability Reserved

Credit

CW.Wong (VulDB User)
VulDB CNA Team
.