CVE-2026-57860— ForgeCode Arbitrary Code Execution via Unvetted .mcp.json in Untrusted Repository
Possible ATT&CK Techniques 3AI
T1068 · Exploitation for Privilege Escalation T1059 · Command and Scripting Interpreter T1190 · Exploit Public-Facing ApplicationAffected Version Matrix 1
| Vendor | Product | Version Range | Status |
|---|---|---|---|
| tailcallhq | forgecode | 2.11.1 | affected |
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I. Basic Information for CVE-2026-57860
Vulnerability Information
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Vulnerability Title
ForgeCode Arbitrary Code Execution via Unvetted .mcp.json in Untrusted Repository
Source: CVE Program / CVE List V5
Vulnerability Description
ForgeCode (tailcallhq/forgecode), an AI pair-programming CLI, automatically loads and executes the MCP servers defined in a repository's .mcp.json file on startup without user confirmation. A malicious repository can supply a crafted .mcp.json whose mcpServers entries specify arbitrary command and args values (for example, command: bash with args: ['-c', 'touch /tmp/pwned']). When a user runs the forge CLI inside a cloned untrusted repository, the specified commands are spawned with the invoking user's privileges, resulting in arbitrary code execution. This provides a reliable initial-access and persistence primitive against developers who evaluate untrusted repositories with ForgeCode.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
Source: CVE Program / CVE List V5
Vulnerability Type
从非可信控制范围包含功能例程
Source: CVE Program / CVE List V5
Vulnerability Title
Tailcall Forge 软件供应链问题漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
Tailcall Forge是美国Tailcall公司开源的一款Web中间件软件。 Tailcall Forge 2.11.1版本存在软件供应链问题漏洞，该漏洞源于启动时自动加载并执行仓库中.mcp.json文件定义的MCP服务器，且无需用户确认。恶意仓库可提供特制.mcp.json文件，指定任意命令及参数，当用户在克隆的不可信仓库中运行forge CLI时，指定命令将以调用用户权限执行，从而导致任意代码执行。
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 |
|---|---|---|---|---|
| tailcallhq | forgecode | 2.11.1 | - |
II. Public POCs for CVE-2026-57860
| # | POC Description | Source Link | Shenlong Link |
|---|
AI-Generated POCPremium
Qwen3.6-35B-A3B · 7679 chars
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III. Intelligence Information for CVE-2026-57860
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Vendor Advisories for CVE-2026-57860 (2)
Proof of Concept for CVE-2026-57860 (1)
IV. Related Vulnerabilities
V. Comments for CVE-2026-57860
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