CVE-2026-41950 — Arbitrary File Access
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 ca
What This Means For You
- If your environment is affected by CWE-639, review your exposure and prioritize patching based on your environment. Monitor vendor advisories for CVE-2026-41950 updates and patches.
Related ATT&CK Techniques
🛡️ Detection Rules
3 rules · 6 SIEM formats3 detection rules auto-generated for this incident, mapped to MITRE ATT&CK. Sigma YAML is free — export to any SIEM format via the Intel Bot.
CVE-2026-41950 - Dify Arbitrary File Access via Chat Messages
title: CVE-2026-41950 - Dify Arbitrary File Access via Chat Messages
id: scw-2026-05-05-ai-1
status: experimental
level: high
description: |
Detects requests to the Dify '/api/v1/chat-messages' endpoint with a POST method and a URI query containing 'uuid', which is indicative of an attempt to exploit CVE-2026-41950. This vulnerability allows authenticated users to access arbitrary files uploaded by other users within the same tenant by supplying a malicious file UUID.
author: SCW Feed Engine (AI-generated)
date: 2026-05-05
references:
- https://shimiscyberworld.com/posts/nvd-CVE-2026-41950/
tags:
- attack.initial_access
- attack.t1190
logsource:
category: webserver
detection:
selection:
cs-uri|contains:
- '/api/v1/chat-messages'
cs-method|exact:
- 'POST'
cs-uri-query|contains:
- 'uuid'
selection_base:
sc-status|exact:
- '200'
condition: selection AND selection_base
falsepositives:
- Legitimate administrative activity
Source: Shimi's Cyber World · License & reuse
Indicators of Compromise
| ID | Type | Indicator |
|---|---|---|
| CVE-2026-41950 | vulnerability | CVE-2026-41950 |
| CWE-639 | weakness | CWE-639 |
Written by SCW Vulnerability Desk
Source & Attribution
| Source Platform | NVD |
| Channel | National Vulnerability Database |
| Published | May 06, 2026 at 00:16 UTC |
This content was curated and summarized by Shimi's Cyber World for informational purposes. It is not copied or republished in full. All intellectual property rights remain with the original author and source.
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