CVE-2026-41949
highpriority · track · 30EPSS 0.004 · 38 %ileEUUSEPSS · scored 2026-10-28
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.
cvss
Technical severity, 0–10. One row per scoring source.
base score 0–10 · higher = more severe · hover a vector to decode⚠ sources disagree · medium–high · 4.6–8.2
ssvc
A stakeholder decision — act, attend, or track — from exploitation and impact.
weaknesses
The CWE weakness classes this flaw belongs to.
affected products (2)
Products and version ranges known to be affected.
also known as (3)
Other names and identifiers for this entity.
sources
Which sources assert this record, and when.
references (18)
External citations — patches, advisories, analysis.
- https://github.com/langgenius/dify/commit/432a6412a3fdb30ce48003d699b90cc7d890df20cnnvd
- https://github.com/langgenius/dify/pull/35797cnnvd
- https://github.com/langgenius/dify/releases/tag/1.14.2cnnvd
- https://huntr.com/bounties/d50a0240-7951-4939-b989-9bded66c7682cnnvd
- https://www.vulncheck.com/advisories/dify-authorization-bypass-via-file-preview-endpointcnnvd
- https://www.zafran.io/resources/difytap-zafran-discovers-how-attackers-can-silently-wiretap-ai-data-across-tenants-on-a-platform-powering-1m-appscnnvd
- https://github.com/langgenius/dify/commit/432a6412a3fdb30ce48003d699b90cc7d890df20enisa_euvd
- https://github.com/langgenius/dify/pull/35797enisa_euvd
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