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TI-2025-36405 Aliases CVE-2025-58747

Dify MCP OAuth Flow Vulnerable to XSS

Priority MEDIUM 44CWE-79Published · Updated

Key facts

Attack vector
Network
Privileges required
None
User interaction
Active
Attack complexity
Low
Attack requirements
None
Impact type
Cross-site scripting
Confidentiality · integrity · availability
None · None · None
Fix status
No fix listed

Attack profile from CVSS 4.0 · CNA. Fix status from CNA. Impact type from CWE-79.

Summary

Dify is an LLM application development platform. In Dify versions through 1.9.1, the MCP OAuth component is vulnerable to cross-site scripting when a victim connects to an attacker-controlled remote MCP server. The vulnerability exists in the OAuth flow implementation where the authorization_url provided by a remote MCP server is directly passed to window.open without validation or sanitization. An attacker can craft a malicious MCP server that returns a JavaScript URI (such as javascript:alert(1)) in the authorization_url field, which is then executed when the victim attempts to connect to the MCP server. This allows the attacker to execute arbitrary JavaScript in the context of the Dify application.

Why it matters now

Exploitation Proof of concept CISA SSVC · not in CISA KEV
EPSS 0.06014 93rd percentileScored 2026-11-07
Public exploit Yes 1 exploit referenceTagged by NVD
Fix No fix listed No fixed version in the sources yet

SSVC decision points

CISA ADP · SSVC 2.0.3

Exploitation
Poc
Automatable
No
Technical impact
Partial

The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.

Affected products

VendorProductAffected versionsFixed inStatusSource
langgeniusdifyup to 1.9.1—No fix listedCNA
  • dify Vendorlanggenius Affected up to 1.9.1 Fixed in — No fix listed CNA

CPE configurations NVD · 1

CPEVersionsRoleVendor
cpe:2.3:a:langgenius:dify:*:*:*:*:*:node.js:*:*before 1.9.2Vulnerablelanggenius
  • cpe:2.3:a:langgenius:dify:*:*:*:*:*:node.js:*:* Versions before 1.9.2 Vulnerable ·langgenius

Remediation

No fixed version listed by the sources yet.

Timeline

  1. 2026-10-02 Threatist record created from CVE-2025-58747

References

Exploit 1

Patch 1

  • TI-2025-35265 Default credentials in Dify thru 1.5.1. CVSS 3.1CRITICAL 9.8
  • TI-2025-03045 Unsanitized Input in langgenius/dify CVSS 3.1HIGH 7.2
  • TI-2025-01548 Admin account takeover through weak Pseudo-Random number generator used in generating… CVSS 3.1HIGH 8.8
  • TI-2026-30470 Dify Vulnerable to Stored XSS via SVG-file upload CVSS 4.0MEDIUM 6.9
  • TI-2024-11840 Authentication Bypass in langgenius/dify CVSS 3.0HIGH 8.1
  • TI-2024-11170 Improper Restriction of Excessive Authentication Attempts in langgenius/dify CVSS 3.1HIGH 8.1
See all 26 →

Sources

This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences