Cross-site scripting in Dify - CVE-2025-58747
Published: July 28, 2026
Vulnerability identifier: #VU139840
CSH Severity: Medium
CVSS v4.0: CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:A/VC:N/VI:N/VA:N/SC:L/SI:L/SA:N/E:U/U:Green
CVE-ID: CVE-2025-58747
CWE-ID: CWE-79
Exploitation vector: Remote access
Exploit availability:
No public exploit available
Vendor: LangGenius
Affected software:
Dify
Dify
Detailed vulnerability description
The vulnerability allows a remote attacker to execute arbitrary script code in the victim's browser.
The vulnerability exists due to cross-site scripting in the MCP OAuth flow when opening an authorization URL from an attacker-controlled remote MCP server. A remote attacker can provide a specially crafted authorization URL to execute arbitrary script code in the victim's browser.
User interaction is required when the victim connects to an attacker-controlled remote MCP server.
How to mitigate CVE-2025-58747
Install security update from vendor's website.