CVE-2026-7846

LOW EPSS 5.8%
Published May 5, 20261mo ago · Modified Jun 17, 20261w ago
1.2 CVSS 4.0
Low
Find Similar
Published May 5, 2026 1mo ago
Last Modified Jun 17, 2026 1w ago

Description

A vulnerability has been found in chatchat-space Langchain-Chatchat up to 0.3.1.3. Impacted is the function files of the file libs/chatchat-server/chatchat/server/api_server/openai_routes.py of the component OpenAI-Compatible File Upload API. Such manipulation of the argument file.filename leads to time-of-check time-of-use. Access to the local network is required for this attack to succeed. The attack requires a high level of complexity. The exploitability is considered difficult. The exploit has been disclosed to the public and may be used. The project was informed of the problem early through an issue report but has not responded yet.

CVSS Details

Base Score
1.2
Exploitability
—
Impact
—
Vector string
CVSS:4.0/AV:A/AC:H/AT:N/PR:L/UI:N/VC:N/VI:L/VA:N/SC:N/SI:N/SA:N/E:P/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
Attack Vector Adjacent
Attack Complexity High
Privileges Required Low
User Interaction None
Scope X

Threat Intelligence

EPSS Exploit Probability
5.8% percentile
Exploit & Patch Status
No Known Exploit
No Patch Available

Weaknesses 2

CWE-362
CWE-367

References 6

  • github.com https://github.com/3em0/cve_repo/blob/main/Langchain-Chatchat/Vuln-2-Silent-File-Overwrite.md
  • github.com https://github.com/chatchat-space/Langchain-Chatchat/
  • github.com https://github.com/chatchat-space/Langchain-Chatchat/issues/5463
  • vuldb.com https://vuldb.com/submit/807795
  • vuldb.com https://vuldb.com/vuln/361125
  • vuldb.com https://vuldb.com/vuln/361125/cti

Remediation

No remediation data recorded yet

Check vendor advisories and the NVD entry for patch availability.