CVE-2026-41950

Description

Dify before version 1.14.0 contains an authorization bypass vulnerability that allows authenticated users to read the full contents of files uploaded by other users within the same tenant by supplying an arbitrary file UUID in the files array of a chat-messages request. Attackers can exploit insufficient permission verification in the chat-messages endpoints to access files without ownership validation, bypassing workspace separation and signed URL protections to retrieve sensitive file contents through workflow processing.

CVSS v3.1 Score

6.5

MEDIUM

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

EPSS — Exploit Prediction

0.0003

Probability of exploitation

0.09%

Percentile rank

EPSS estimates the probability that this vulnerability will be exploited in the wild within the next 30 days. A higher score means more likely to be exploited.

Weakness Type (CWE)

CWE-639 CWE-639

Affected Products

Vendor	Product	Versions
langgenius	dify	< 1.14.0

References

Exploits

https://huntr.com/bounties/181136ec-d957-4b75-8ea7-6fa7b8abd01d https://huntr.com/bounties/181136ec-d957-4b75-8ea7-6fa7b8abd01d

Other References

https://github.com/langgenius/dify/releases/tag/1.14.0 https://www.vulncheck.com/advisories/dify-authorization-bypass-via-file-uuid

Frequently Asked Questions

What is CVE-2026-41950? +

Dify before version 1.14.0 contains an authorization bypass vulnerability that allows authenticated users to read the full contents of files uploaded by other users within the same tenant by supplying an arbitrary file UUID in the files array of a chat-messages request. Attackers can exploit insufficient permission verification in the chat-messages endpoints to access files without ownership validation, bypassing workspace separation and signed URL protections to retrieve sensitive file contents through workflow processing. It has a CVSS v3.1 base score of 6.5 (MEDIUM).

How severe is CVE-2026-41950? +

CVE-2026-41950 has a CVSS v3.1 score of 6.5 out of 10, rated MEDIUM. This is a medium-severity vulnerability that should be remediated as part of regular maintenance. The EPSS score is 0.0003, placing it in the 0th percentile for exploitation probability.

What products are affected by CVE-2026-41950? +

CVE-2026-41950 affects products from langgenius, specifically: dify. Check the affected products table above for specific version ranges.

How do I check if I'm vulnerable to CVE-2026-41950? +

You can use Secably's free Website Scanner to check your website for known vulnerabilities. For infrastructure scanning, use the Port Scanner to identify exposed services that may be affected. Check the vendor advisories linked above for specific patch and version information.

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