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NVD Vulnerability Details :

CVE-2025-59835

Awaiting Analysis

Source-security-advisories@github.com

Published At-02 Oct, 2025 | 19:15

Updated At-06 Oct, 2025 | 14:57

LangBot is a global IM bot platform designed for LLMs. In versions 4.1.0 up to but not including 4.3.5, authorized attackers can exploit the /api/v1/files/documents interface to perform arbitrary file uploads. Since this interface does not strictly restrict the storage directory of files on the server, it is possible to upload dangerous files to specific system directories. This is fixed in version 4.3.5.

Date Added	Due Date	Vulnerability Name	Required Action
	N/A

Metrics

Type	Version	Base score	Base severity	Vector
Secondary	4.0	8.6	HIGH	CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:H/SI:H/SA:H/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

Type: Secondary

Version: 4.0

Base score: 8.6

Base severity: HIGH

Vector:

CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:H/SI:H/SA:H/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

Weaknesses

CWE ID	Type	Source
CWE-23	Primary	security-advisories@github.com
CWE-434	Primary	security-advisories@github.com

CWE ID: CWE-23

Type: Primary

Source: security-advisories@github.com

CWE ID: CWE-434

Type: Primary

Source: security-advisories@github.com

References

Hyperlink	Source	Resource
https://github.com/langbot-app/LangBot/pull/1691	security-advisories@github.com	N/A
https://github.com/langbot-app/LangBot/releases/tag/v4.3.5	security-advisories@github.com	N/A
https://github.com/langbot-app/LangBot/security/advisories/GHSA-7j3j-qj83-9qv4	security-advisories@github.com	N/A