CVE-2026-7844 — Chatchat-Space Langchain-Chatchat Vulnerability
CVE-2026-7844 — A vulnerability was detected in chatchat-space Langchain-Chatchat up to 0.3.1.3. This vulnerability affects the function files/list_files/retrieve_file/retrieve_file_content/delete_file of the file libs/chatchat-server/chatchat/server/api_server/openai_routes.py of the component Comp
What This Means For You
- If your environment is affected by CWE-287, CWE-306, review your exposure and prioritize patching based on your environment. Monitor vendor advisories for CVE-2026-7844 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.
Exploit of CVE-2026-7844 - Langchain-Chatchat File Service Missing Authentication
title: Exploit of CVE-2026-7844 - Langchain-Chatchat File Service Missing Authentication
id: scw-2026-05-05-ai-1
status: experimental
level: critical
description: |
Detects attempts to access the file service endpoints in chatchat-space Langchain-Chatchat (up to 0.3.1.3) which are vulnerable to missing authentication (CVE-2026-7844). This rule specifically targets the known vulnerable paths within the API server.
author: SCW Feed Engine (AI-generated)
date: 2026-05-05
references:
- https://shimiscyberworld.com/posts/nvd-CVE-2026-7844/
tags:
- attack.initial_access
- attack.t1190
logsource:
category: webserver
detection:
selection:
cs-uri|contains:
- '/files/list_files'
- '/files/retrieve_file'
- '/files/retrieve_file_content'
- '/files/delete_file'
cs-method:
- 'GET'
- 'POST'
condition: selection
falsepositives:
- Legitimate administrative activity
Source: Shimi's Cyber World · License & reuse
Indicators of Compromise
| ID | Type | Indicator |
|---|---|---|
| CVE-2026-7844 | vulnerability | CVE-2026-7844 |
| CWE-287 | weakness | CWE-287 |
| CWE-306 | weakness | CWE-306 |
Written by SCW Vulnerability Desk
Source & Attribution
| Source Platform | NVD |
| Channel | National Vulnerability Database |
| Published | May 05, 2026 at 19:16 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.
Believe this infringes your rights? Submit a takedown request.
Related coverage
CVE-2026-43002 — OpenStack Horizon 25.6 And Vulnerability
CVE-2026-43002 — An issue was discovered in OpenStack Horizon 25.6 and 25.7 before 25.7.3. There is a write operation to the session storage backend before...
Eclipse BaSyx Server SDK Vulnerability Bypasses Network Segmentation
CVE-2026-7412 — In Eclipse BaSyx Java Server SDK versions prior to 2.0.0-milestone-10, the Operation Delegation feature fails to validate the destination URI of delegated requests....
Eclipse BaSyx RCE: Critical Path Traversal in Server SDK
CVE-2026-7411 — In Eclipse BaSyx Java Server SDK versions prior to 2.0.0-milestone-10, inadequate path normalization in the Submodel HTTP API allows an unauthenticated remote attacker...