CVE-2026-50158
Published:July 14, 2026
Updated:August 27, 2026
The "caption-download" MCP tool in yutu passes the caller-supplied "file" parameter directly to "os.Create()" at "pkg/caption/caption.go:272" without any path validation, canonicalization, or confinement to the "pkg.Root" boundary ("YUTU_ROOT"). A local attacker — or any process able to reach the HTTP MCP server — can write arbitrary content to any path writable by the yutu process, entirely outside the intended working directory. This is a High severity vulnerability (CVSS 7.7) with high integrity and availability impact.
Affected Packages
https://github.com/eat-pray-ai/yutu.git (GITHUB):
Affected version(s) >=v0.10.1 <v0.10.9-dev1Fix Suggestion:
Update to version v0.10.9-dev1github.com/eat-pray-ai/yutu (GO):
Affected version(s) >=v0.0.0-20240323160833-2e3928c44b6c <v0.10.9-dev1Fix Suggestion:
Update to version v0.10.9-dev1github.com/eat-pray-ai/yutu (GO):
Affected version(s) >=v0.10.1 <v0.10.9-dev1Fix Suggestion:
Update to version v0.10.9-dev1Related Resources (4)
Do you need more information?
Contact UsCVSS v4
Base Score:
7
Attack Vector
LOCAL
Attack Complexity
LOW
Attack Requirements
NONE
Privileges Required
NONE
User Interaction
NONE
Vulnerable System Confidentiality
NONE
Vulnerable System Integrity
HIGH
Vulnerable System Availability
HIGH
Subsequent System Confidentiality
NONE
Subsequent System Integrity
NONE
Subsequent System Availability
NONE
CVSS v3
Base Score:
7.7
Attack Vector
LOCAL
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality
NONE
Integrity
HIGH
Availability
HIGH
Weakness Type (CWE)
External Control of File Name or Path