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CVE-2025-6853

Date: June 29, 2025

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.

Severity Score

Related Resources (7)

https://nvd.nist.gov/vuln/detail/CVE-2025-6853
https://vuldb.com/?submit.601155
https://vuldb.com/?id.314325
https://vuldb.com/?ctiid.314325
https://github.com/chatchat-space/Langchain-Chatchat
https://github.com/chatchat-space/Langchain-Chatchat/issues/5352
https://www.mend.io/vulnerability-database/CVE-2025-6853

Severity Score

Weakness Type (CWE)

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

CWE-22

CVSS v3.1

Base Score:
Attack Vector (AV): NETWORK
Attack Complexity (AC): LOW
Privileges Required (PR): NONE
User Interaction (UI): NONE
Scope (S): UNCHANGED
Confidentiality (C): HIGH
Integrity (I): HIGH
Availability (A): HIGH

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