CVE-2026-42138 MEDIUM

CVE-2026-42138: Dify Vulnerable to Stored XSS via SVG-file upload

Vendor Langgenius
Product dify
Weakness CWE-79 · XSS
Published May 4, 2026
Last update May 4, 2026
View on NVD All CVEs

CVSS base score

6.9/10
Attack vector Network
Attack complexity Low
Privileges required None
User interaction None
Confidentiality —
Integrity —

CVSS vector

CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:L/VA:N/SC:N/SI:N/SA:N

What the vulnerability does

01Description

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.

Key dates

02Disclosure timeline

May 4, 2026 CVE published
May 4, 2026 Record updated