CVE-2025-6853

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.

CVSS v3 6.3 MEDIUM
CVSS v2.0 6.5 MEDIUM

6.3^/10

CVSS v3 : MEDIUM

Vector :

Exploitability : 2.8 / Impact : 3.4

Attack Vector NETWORK

Attack Complexity LOW

Privileges Required LOW

User Interaction NONE

Confidentiality Impact LOW

Integrity Impact LOW

Availability Impact LOW

Scope UNCHANGED

6.5^/10

CVSS v2.0 : MEDIUM

Vector : AV:N/AC:L/Au:S/C:P/I:P/A:P

Exploitability : 8.0 / Impact : 6.4

Access Vector NETWORK

Access Complexity LOW

Authentication SINGLE

Confidentiality Impact PARTIAL

Integrity Impact PARTIAL

Availability Impact PARTIAL

References

Link	Resource
https://github.com/chatchat-space/Langchain-Chatchat/issues/5352	Exploit Issue Tracking
https://vuldb.com/?ctiid.314325	Permissions Required VDB Entry
https://vuldb.com/?id.314325	Third Party Advisory VDB Entry
https://vuldb.com/?submit.601155	Third Party Advisory VDB Entry
https://github.com/chatchat-space/Langchain-Chatchat/issues/5352	Exploit Issue Tracking

Configurations

Configuration 1 (hide)

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

History

No history.

Information

Published : 2025-06-29 08:15

Updated : 2025-09-16 13:34

NVD link : CVE-2025-6853

Mitre link : CVE-2025-6853

CVE.ORG link : CVE-2025-6853

JSON object : View

Products Affected

chatchat-space

langchain-chatchat

CWE

CWE-22

Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal')

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