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TI-2026-06902 Aliases CVE-2026-7844GHSA-xvqj-p4jj-r7xh

chatchat-space Langchain-Chatchat Compatible File Service openai_routes.py delete_file missing authentication

Priority MEDIUM 57CWE-287Published · Updated

Key facts

Attack vector
Adjacent network
Privileges required
None
User interaction
None
Attack complexity
Low
Attack requirements
None
Impact type
Security bypass
Confidentiality · integrity · availability
Low · Low · Low
Fix status
No fix listed

Attack profile from CVSS 4.0 · CNA. Fix status from CNA. Impact type from CWE-287.

Summary

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 Compatible File Service. The manipulation results in missing authentication. The attacker must have access to the local network to execute the attack. The exploit is now public and may be used. The project was informed of the problem early through an issue report but has not responded yet.

Why it matters now

Exploitation Proof of concept CISA SSVC · not in CISA KEV
EPSS 0.00322 25th percentileScored 2026-11-07
Public exploit Yes 1 exploit referenceTagged by the CNA
Fix No fix listed No fixed version in the sources yet

SSVC decision points

CISA ADP · SSVC 2.0.3

Exploitation
Poc
Automatable
No
Technical impact
Partial

The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.

Affected products

VendorProductAffected versionsFixed inStatusSource
chatchat-spaceLangchain-Chatchat0.3.1.0; 0.3.1.1; 0.3.1.2; 0.3.1.3—No fix listedCNA
  • Langchain-Chatchat Vendorchatchat-space Affected 0.3.1.0; 0.3.1.1; 0.3.1.2; 0.3.1.3 Fixed in — No fix listed CNA

CPE names Threatist (inferred) · 1

Inferred from how NVD named this product before; not given by a source.

CPEVersionsRoleVendor
cpe:2.3:a:chatchat-space:langchain-chatchat:*:*:*:*:*:*:*:*——chatchat-space
  • cpe:2.3:a:chatchat-space:langchain-chatchat:*:*:*:*:*:*:*:* Versions — — ·chatchat-space

Remediation

No fixed version listed by the sources yet.

Timeline

  1. 2026-10-02 Threatist record created from CVE-2026-7844
  2. 2026-10-03 Alias added: GHSA-xvqj-p4jj-r7xh

References

Exploit 1

Other 2

  • TI-2026-76659 Missing authentication in Langchain-Chatchat lets attackers run commands CVSS 4.0CRITICAL 9.3
  • TI-2025-06227 chatchat-space Langchain-Chatchat files path traversal CVSS 4.0MEDIUM 5.3
  • TI-2025-06226 chatchat-space Langchain-Chatchat Backend upload_temp_docs path traversal CVSS 4.0MEDIUM 5.3
  • TI-2025-06228 chatchat-space Langchain-Chatchat file path traversal CVSS 4.0MEDIUM 5.1
  • TI-2026-06905 chatchat-space Langchain-Chatchat Uploaded File openai_routes.py _get_file_id random values CVSS 4.0LOW 2.1
  • TI-2026-06904 chatchat-space Langchain-Chatchat OpenAI-Compatible File Upload API openai_routes.py files toctou CVSS 4.0LOW 2.1
See all 7 →

Sources

This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences