A vulnerability classified as critical has been found in chatchat-space Langchain-Chatchat up to 0.3.1. This affects the function upload_temp_docs of the file /knowledge_base/upload_temp_docs of the component Backend. The manipulation of the argument flag leads to path traversal. It is possible to initiate the attack remotely. The exploit has been disclosed to the public and may be used.

Metrics

Attack Vector Network

Attack Complexity Low

Privileges Required Low

Attack Requirements None

User Interaction None

Vulnerable System Confidentiality Impact Low

Vulnerable System Integrity Impact Low

Vulnerable System Availability Impact Low

Subsequent System Confidentiality Impact None

Subsequent System Integrity Impact None

Subsequent System Availability Impact None

Attack Vector Network

Attack Complexity Low

Privileges Required Low

Scope Unchanged

Confidentiality Impact Low

Integrity Impact Low

Availability Impact Low

User Interaction None

Attack Vector Network

Attack Complexity Low

Privileges Required Low

Scope Unchanged

Confidentiality Impact Low

Integrity Impact Low

Availability Impact Low

User Interaction None

Access Vector Network

Access Complexity Low

Authentication Single

Confidentiality Impact Partial

Integrity Impact Partial

Availability Impact Partial

This CVE is not in the KEV list.

The EPSS score is 0.00122.

Exploitation poc

Automatable no

Technical Impact partial

Affected Vendors & Products

Vendors Products
Chatchat-space
  • Langchain-chatchat

Configuration 1 [-]

cpe:2.3:a:chatchat-space:langchain-chatchat:*:*:*:*:*:*:*:*

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Advisories
Source ID Title
EUVD EUVD EUVD-2025-19477 Langchain-Chatchat has a Path Traversal vulnerability
Github GHSA Github GHSA GHSA-qmgv-j263-qr33 Langchain-Chatchat has a Path Traversal vulnerability
Fixes

Solution

No solution given by the vendor.

Workaround

No workaround given by the vendor.

References
Link Providers
https://github.com/chatchat-space/Langchain-Chatchat/issues/5352 cve-icon cve-icon cve-icon
https://vuldb.com/?ctiid.314325 cve-icon cve-icon
https://vuldb.com/?id.314325 cve-icon cve-icon
https://vuldb.com/?submit.601155 cve-icon cve-icon
History

Tue, 16 Sep 2025 15:00:00 +0000

Type Values Removed Values Added
First Time appeared Chatchat-space
Chatchat-space langchain-chatchat
CPEs cpe:2.3:a:chatchat-space:langchain-chatchat:*:*:*:*:*:*:*:*
Vendors & Products Chatchat-space
Chatchat-space langchain-chatchat

Mon, 30 Jun 2025 16:15:00 +0000

Type Values Removed Values Added
Metrics ssvc

{'options': {'Automatable': 'no', 'Exploitation': 'poc', 'Technical Impact': 'partial'}, 'version': '2.0.3'}

Sun, 29 Jun 2025 07:45:00 +0000

Type Values Removed Values Added
Description A vulnerability classified as critical has been found in chatchat-space Langchain-Chatchat up to 0.3.1. This affects the function upload_temp_docs of the file /knowledge_base/upload_temp_docs of the component Backend. The manipulation of the argument flag leads to path traversal. It is possible to initiate the attack remotely. The exploit has been disclosed to the public and may be used.
Title chatchat-space Langchain-Chatchat Backend upload_temp_docs path traversal
Weaknesses CWE-22
References
Metrics cvssV2_0

{'score': 6.5, 'vector': 'AV:N/AC:L/Au:S/C:P/I:P/A:P/E:POC/RL:ND/RC:UR'}

cvssV3_0

{'score': 6.3, 'vector': 'CVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:L/E:P/RL:X/RC:R'}

cvssV3_1

{'score': 6.3, 'vector': 'CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:L/E:P/RL:X/RC:R'}

cvssV4_0

{'score': 5.3, 'vector': 'CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:L/VI:L/VA:L/SC:N/SI:N/SA:N/E:P'}
cve-icon MITRE

Status: PUBLISHED

Assigner: VulDB

Published:

Updated: 2025-06-30T15:44:45.431Z

Reserved: 2025-06-28T10:37:51.109Z

Link: CVE-2025-6853

cve-icon Vulnrichment

Updated: 2025-06-30T15:44:27.950Z

cve-icon NVD

Status : Analyzed

Published: 2025-06-29T08:15:21.550

Modified: 2025-09-16T13:34:02.377

Link: CVE-2025-6853

cve-icon Redhat

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cve-icon OpenCVE Enrichment

No data.