CVE-2025-6855

| EUVD-2025-19478 MEDIUM
5.5
CVSS 3.1
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CVSS Vector

CVSS:3.1/AV:A/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:L
Attack Vector
Adjacent
Attack Complexity
Low
Privileges Required
Low
User Interaction
None
Scope
Unchanged
Confidentiality
Low
Integrity
Low
Availability
Low

Lifecycle Timeline

4
Analysis Generated
Mar 16, 2026 - 01:15 vuln.today
EUVD ID Assigned
Mar 16, 2026 - 01:15 euvd
EUVD-2025-19478
PoC Detected
Oct 31, 2025 - 19:58 vuln.today
Public exploit code
CVE Published
Jun 29, 2025 - 09:15 nvd
MEDIUM 5.5

Description

A vulnerability, which was classified as critical, has been found in chatchat-space Langchain-Chatchat up to 0.3.1. This issue affects some unknown processing of the file /v1/file. The manipulation of the argument flag leads to path traversal. The exploit has been disclosed to the public and may be used.

Analysis

A vulnerability, which was classified as critical, has been found in chatchat-space Langchain-Chatchat up to 0.3.1. This issue affects some unknown processing of the file /v1/file. The manipulation of the argument flag leads to path traversal. The exploit has been disclosed to the public and may be used.

Technical Context

Path traversal allows an attacker to access files outside the intended directory by manipulating file paths with sequences like '../'.

Affected Products

Affected products: Chatchat-Space Langchain-Chatchat

Remediation

Validate and sanitize file path inputs. Use a whitelist of allowed files or directories. Implement chroot jails or containerization.

Priority Score

48
Low Medium High Critical
KEV: 0
EPSS: +0.2
CVSS: +28
POC: +20

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CVE-2025-6855 vulnerability details – vuln.today

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