Vulnerability · Published May 4, 2026 · Assigned by GitHub_M
CVE-2026-42138Dify Vulnerable to Stored XSS via SVG-file upload
Medium 6.9
In plain English
A medium-severity cross-site scripting in dify from langgenius. Proof-of-concept exploit code is public. The chance it is exploited in the next 30 days is estimated at 0.2% (higher than 14% of all known vulnerabilities).
Severity (CVSS 4.0)6.9Medium
Exploit odds (30 days)0.2%top 85.6% of all CVEs
Exploited in the wildNo reportsCISA SSVC: poc
Attack toolingNoneno public tooling known
Official description
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.
Affected products (as reported)
| Vendor | Product | Versions |
|---|---|---|
| langgenius | dify | < 1.13.1 |
Weakness: CWE-79 · 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
References
- https://github.com/langgenius/dify/security/advisories/GHSA-cg94-8v83-7hjj x_refsource_CONFIRM
- https://github.com/langgenius/dify/releases/tag/1.13.1 x_refsource_MISC