CVE-2026-42138

Dify is an open-source LLM app development platform. Prior to version 1.13.1, using the method POST /api/files/upload, any unauthenticated user can upload an SVG file with XSS. The method POST /v1/files/upload, which requires authentication through the application API, is also vulnerable. This issue has been patched in version 1.13.1.

CVSS v3 6.1 MEDIUM

6.1^/10

CVSS v3 : MEDIUM

Vector :

Exploitability : 2.8 / Impact : 2.7

Attack Vector NETWORK

Attack Complexity LOW

Privileges Required NONE

User Interaction REQUIRED

Confidentiality Impact LOW

Integrity Impact LOW

Availability Impact NONE

Scope CHANGED

References

Link	Resource
https://github.com/langgenius/dify/releases/tag/1.13.1	Release Notes
https://github.com/langgenius/dify/security/advisories/GHSA-cg94-8v83-7hjj	Exploit Vendor Advisory
https://github.com/langgenius/dify/security/advisories/GHSA-cg94-8v83-7hjj	Exploit Vendor Advisory

Configurations

Configuration 1 (hide)

cpe:2.3:a:langgenius:dify:*:*:*:*:*:node.js:*:*

History

11 May 2026, 21:08

Type	Values Removed	Values Added
First Time		Langgenius Langgenius dify
CVSS	v2 : ~~unknown~~ v3 : ~~unknown~~	v2 : unknown v3 : 6.1
References	~~() https://github.com/langgenius/dify/releases/tag/1.13.1 -~~	() https://github.com/langgenius/dify/releases/tag/1.13.1 - Release Notes
References	~~() https://github.com/langgenius/dify/security/advisories/GHSA-cg94-8v83-7hjj -~~	() https://github.com/langgenius/dify/security/advisories/GHSA-cg94-8v83-7hjj - Exploit, Vendor Advisory
CPE		cpe:2.3:a:langgenius:dify::::::node.js::*

04 May 2026, 20:16

Type	Values Removed	Values Added
References	~~() https://github.com/langgenius/dify/security/advisories/GHSA-cg94-8v83-7hjj -~~	() https://github.com/langgenius/dify/security/advisories/GHSA-cg94-8v83-7hjj -

04 May 2026, 18:16

Type	Values Removed	Values Added
New CVE

Information

Published : 2026-05-04 18:16

Updated : 2026-05-11 21:08

NVD link : CVE-2026-42138

Mitre link : CVE-2026-42138

CVE.ORG link : CVE-2026-42138

JSON object : View

Products Affected

langgenius

dify

CWE

CWE-79

Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')

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