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CVE-2026-10277— j3k0 mcp-google-workspace MCP Gmail Tool gmail.ts saveToDisk access control

Quick assessment

Affected
j3k0 mcp-google-workspace
Exploitation
No confirmed in-the-wild exploitation; assess based on exposure
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

MCP Google Workspace Server是Jean-Christophe Hoelt个人开发者的一个集成Gmail和日历的MCP服务工具。 MCP Google Workspace Server存在访问控制错误漏洞，该漏洞源于MCP Gmail Tool组件中文件src/tools/gmail.ts的函数saveToDisk的错误操作，可能导致访问控制不当。

CVSS 6.3 · Medium EPSS 0.28% · P18

Affected Version Matrix 1

VendorProduct Version RangeStatus
j3k0 mcp-google-workspace 831790e7d5c2663325733d9f5579cc339a267c4c affected
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I. Basic Information for CVE-2026-10277

Vulnerability Information
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Vulnerability Title
j3k0 mcp-google-workspace MCP Gmail Tool gmail.ts saveToDisk access control
Source: CVE Program / CVE List V5
Vulnerability Description
A vulnerability was found in j3k0 mcp-google-workspace up to 831790e7d5c2663325733d9f5579cc339a267c4c. This issue affects the function saveToDisk of the file src/tools/gmail.ts of the component MCP Gmail Tool. Performing a manipulation results in improper access controls. It is possible to initiate the attack remotely. The exploit has been made public and could be used. This product is using a rolling release to provide continious delivery. Therefore, no version details for affected nor updated releases are available. The patch is named 89c091ecf8b9f9c7291d1af0b1966e271f86551c. It is suggested to install a patch to address this issue.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:L
Source: CVE Program / CVE List V5
Vulnerability Type
访问控制不恰当
Source: CVE Program / CVE List V5
Vulnerability Title
MCP Google Workspace Server 访问控制错误漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
MCP Google Workspace Server是Jean-Christophe Hoelt个人开发者的一个集成Gmail和日历的MCP服务工具。 MCP Google Workspace Server存在访问控制错误漏洞，该漏洞源于MCP Gmail Tool组件中文件src/tools/gmail.ts的函数saveToDisk的错误操作，可能导致访问控制不当。
Source: CNNVD (China National Vulnerability Database)
CVSS Information
N/A
Source: CNNVD (China National Vulnerability Database)
Vulnerability Type
N/A
Source: CNNVD (China National Vulnerability Database)

Affected Products

Vendor Product Affected Versions CPE Subscribe
j3k0 mcp-google-workspace 831790e7d5c2663325733d9f5579cc339a267c4c cpe:2.3:a:j3k0:mcp-google-workspace:*:*:*:*:*:*:*:*

II. Public POCs for CVE-2026-10277

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III. Intelligence Information for CVE-2026-10277

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Patches & Fixes for CVE-2026-10277 (2)

Proof of Concept for CVE-2026-10277 (1)

Other References for CVE-2026-10277 (1)

IV. Related Vulnerabilities

Same weakness: CWE-284

V. Comments for CVE-2026-10277

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