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CVE-2026-61462— mcp-gitlab Path Traversal via job_id Parameter

Quick assessment

Affected
zereight mcp-gitlab
Exploitation
Public or AI PoC available; prioritize validation
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

zereight GitLab MCP Server是zereight个人开发者开源的一款面向 AI 客户端的完整 GitLab MCP 服务器。 zereight GitLab MCP Server 2.1.18之前版本存在输入验证错误漏洞，该漏洞源于build/index.js中job_id参数存在路径遍历，允许攻击者提供特制的job_id值（如../../../user）以绕过路径前缀，重定向GitLab API请求到任意端点，从而使用操作者的个人访问令牌访问任意GitLab API资源。

CVSS 8.6 · High EPSS 0.48% · P41

Affected Version Matrix 1

VendorProduct Version RangeStatus
zereight mcp-gitlab < 2.1.18 affected
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I. Basic Information for CVE-2026-61462

Vulnerability Information
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Vulnerability Title
mcp-gitlab Path Traversal via job_id Parameter
Source: CVE Program / CVE List V5
Vulnerability Description
mcp-gitlab contains a path traversal vulnerability in the job_id parameter of build/index.js that allows attackers to redirect GitLab API requests to arbitrary endpoints. Attackers can supply crafted job_id values like ../../../user to escape the intended path prefix and access arbitrary GitLab API resources using the operator's personal access token.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:N/A:N
Source: CVE Program / CVE List V5
Vulnerability Type
文件名或路径的外部可控制
Source: CVE Program / CVE List V5
Vulnerability Title
zereight GitLab MCP Server 输入验证错误漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
zereight GitLab MCP Server是zereight个人开发者开源的一款面向 AI 客户端的完整 GitLab MCP 服务器。 zereight GitLab MCP Server 2.1.18之前版本存在输入验证错误漏洞，该漏洞源于build/index.js中job_id参数存在路径遍历，允许攻击者提供特制的job_id值（如../../../user）以绕过路径前缀，重定向GitLab API请求到任意端点，从而使用操作者的个人访问令牌访问任意GitLab API资源。
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
zereight mcp-gitlab 0 ~ 2.1.18 -

II. Public POCs for CVE-2026-61462

# POC Description Source Link Shenlong Link
AI-Generated POC Premium
Qwen3.6-35B-A3B · 7778 chars
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Vulnerability reproduction recording (real sandbox build + trigger, exclusive)
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Trigger conditions & impact
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Exploit chain & mitigation
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III. Intelligence Information for CVE-2026-61462

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Patches & Fixes for CVE-2026-61462 (1)

Vendor Advisories for CVE-2026-61462 (1)

Proof of Concept for CVE-2026-61462 (1)

IV. Related Vulnerabilities

Same vendor: zereight
Same weakness: CWE-73

V. Comments for CVE-2026-61462

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