Dify Vulnerable to Stored XSS via SVG-file upload
Priority HIGH 70CWE-79Published · Updated
Key facts
- Attack vector
- Network
- Privileges required
- None
- User interaction
- None
- Attack complexity
- Low
- Attack requirements
- None
- Impact type
- Cross-site scripting
- Confidentiality · integrity · availability
- None · Low · None
- Fix status
- Fixed
Attack profile from CVSS 4.0 · CNA. Fix status from CNA. Impact type from CWE-79.
Summary
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.
Why it matters now
Exploitation Proof of concept CISA SSVC · not in CISA KEV
EPSS 0.00235 14th percentileScored 2026-11-07
Public exploit Yes 1 exploit referenceTagged by NVD
Fix Fixed dify (langgenius): 1.13.1
SSVC decision points
CISA ADP · SSVC 2.0.3
- Exploitation
- Poc
- Automatable
- Yes
- Technical impact
- Partial
The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.
Affected products
| Vendor | Product | Affected versions | Fixed in | Status | Source |
|---|---|---|---|---|---|
| langgenius | dify | before 1.13.1 | 1.13.1 | Patch available | CNA |
- dify Vendorlanggenius Affected before 1.13.1 Fixed in 1.13.1 Patch available CNA
CPE configurations NVD · 1
| CPE | Versions | Role | Vendor |
|---|---|---|---|
| cpe:2.3:a:langgenius:dify:*:*:*:*:*:node.js:*:* | before 1.13.1 | Vulnerable | langgenius |
- cpe:2.3:a:langgenius:dify:*:*:*:*:*:node.js:*:* Versions before 1.13.1 Vulnerable ·langgenius
Remediation
- Fix · CNA dify (langgenius) Fixed in 1.13.1
Timeline
- 2026-10-02 Threatist record created from CVE-2026-42138
References
More langgenius Dify vulnerabilities
- 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-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
- TI-2024-09502 Code Injection in langgenius/dify CVSS 3.1HIGH 7.2
Sources
This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences