CVE-2026-41949 Dify < 1.14.2 Authorization Bypass via File Preview Endpoint
Authenticated users can read sensitive content from any uploaded document across all tenants by accessing the file preview endpoint with a valid UUID.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- None listed
What is CVE-2026-41949?
CVE-2026-41949 is a high-severity missing authorization vulnerability in langgenius dify, published on 18 May 2026. An attacker can exploit it over the internet without logging in, with no action from the victim.
Official description
Dify before version 1.14.2 contains an authorization bypass vulnerability in the file preview endpoint that allows any authenticated user to read up to 3,000 characters of any uploaded document across all tenants and workspaces using only the file's UUID. Attackers can access the /console/api/files/{file_id}/preview endpoint with an intercepted file UUID to extract sensitive content from documents without ownership or workspace permission verification. NOTE: Dify Cloud allows unauthenticated free self-registration, making account creation trivially accessible to any attacker.
Weakness: CWE-639
Which versions are affected by CVE-2026-41949?
It affects 1 product.
Products include Dify Dify.
How do I fix CVE-2026-41949?
No fix has been published for CVE-2026-41949 yet. Limit exposure of the affected software until one is available.
Upgrade, and check permissions on every request on the server, not only in the interface. More about Missing authorization.
Is CVE-2026-41949 being exploited?
It is not confirmed as exploited in the wild, but public exploit code for CVE-2026-41949 exists.
Other vulnerabilities in langgenius dify
- CVE-2026-41947 Dify < 1.14.2 Authorization Bypass via Trace Configuration Endpoints
- CVE-2026-41948 Dify v1.14.1 Path Traversal via Plugin Daemon Internal API Access
- CVE-2025-0185 Pandas Query Injection in langgenius/dify
- CVE-2026-61461 Dify < 1.16.0-rc1 SQL Injection via MyScale Vector Store search_by_full_text
- CVE-2025-67732 Dify Vulnerable to Plaintext API Key Exposure via Model Provider Configuration Endpoint
Sources
Also known as GHSA-jv3f-qwf9-wvq9.