CVE-2026-41949

Name: CVE-2026-41949
Creator: NVD / NIST
Published: 2026-05-18T15:16:26.137+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

HIGHCVSS 8.2/10EPSS 0.43%

Last modified Jun 22, 2026

CVE-2026-41949 is a high-severity vulnerability rated 8.2/10 on the CVSS scale. 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. EPSS estimates a 0.43% chance of exploitation in the next 30 days.

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.

Metrics

CVSS 3.1

7.5/10

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N

CVSS 4.0

8.2/10

CVSS:4.0/AV:N/AC:H/AT:N/PR:N/UI:N/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X

EPSS Probability

0.43%

34.8th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

CWE-639

Affected Software

Vendor	Product	Versions
Dify	Dify	<= 1.14.1

References

https://github.com/langgenius/dify/commit/432a6412a3fdb30ce48003d699b90cc7d890df20
https://github.com/langgenius/dify/pull/35797Issue Tracking, Mitigation, Patch
https://github.com/langgenius/dify/releases/tag/1.14.2
https://huntr.com/bounties/d50a0240-7951-4939-b989-9bded66c7682Exploit, Third Party Advisory
https://www.vulncheck.com/advisories/dify-authorization-bypass-via-file-preview-endpointThird Party Advisory
https://www.zafran.io/resources/difytap-zafran-discovers-how-attackers-can-silently-wiretap-ai-data-across-tenants-on-a-platform-powering-1m-apps

Timeline

Published: May 18, 2026
Last Modified: Jun 22, 2026
Status: Modified

Frequently Asked Questions

What is CVE-2026-41949?

How severe is CVE-2026-41949?

CVE-2026-41949 has a CVSS score of 8.2/10 (HIGH severity). The EPSS model estimates a 0.43% probability of exploitation in the next 30 days.

How do I fix CVE-2026-41949?

Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

Are you affected by CVE-2026-41949?

Run a free Strix scan to check your systems for this vulnerability.

Scan your code now

Source: NVD / NIST